We used to output 0 and 1, but "spin -f" does not under understand
that.

* src/ltlvisit/tostring.cc (kw_spin): Output true and false instead of
0 and 1.

* NEWS: Mention this.
* COPYING: Replace by GPL v3.
* src/sanity/style.test: Check files with the wrong license,
in case we forgot to update it during a merge.
* Makefile.am, bench/Makefile.am, bench/emptchk/Makefile.am,
bench/emptchk/defs.in, bench/emptchk/ltl-human.sh,
bench/emptchk/ltl-random.sh, bench/emptchk/pml-clserv.sh,
bench/emptchk/pml-eeaean.sh, bench/emptchk/pml2tgba.pl,
bench/ltl2tgba/big, bench/ltl2tgba/defs.in, bench/ltl2tgba/known,
bench/ltl2tgba/lbtt2csv.pl, bench/ltl2tgba/ltl2baw.in,
bench/ltl2tgba/parseout.pl, bench/ltl2tgba/small,
bench/ltlclasses/Makefile.am, bench/ltlclasses/defs.in,
bench/ltlclasses/run, bench/ltlcounter/Makefile.am,
bench/ltlcounter/defs.in, bench/ltlcounter/run,
bench/scc-stats/Makefile.am, bench/scc-stats/stats.cc,
bench/split-product/Makefile.am, bench/split-product/cutscc.cc,
bench/split-product/pml2tgba.pl, bench/wdba/Makefile.am,
bench/wdba/defs.in, bench/wdba/run, configure.ac, doc/Makefile.am,
doc/dot.in, doc/tl/Makefile.am, iface/Makefile.am,
iface/dve2/Makefile.am, iface/dve2/defs.in, iface/dve2/dve2.cc,
iface/dve2/dve2.hh, iface/dve2/dve2check.cc,
iface/dve2/dve2check.test, iface/dve2/finite.test,
iface/dve2/kripke.test, iface/gspn/Makefile.am, iface/gspn/common.cc,
iface/gspn/common.hh, iface/gspn/dcswave.test,
iface/gspn/dcswaveeltl.test, iface/gspn/dcswavefm.test,
iface/gspn/dcswaveltl.test, iface/gspn/dottygspn.cc,
iface/gspn/dottyssp.cc, iface/gspn/gspn.cc, iface/gspn/gspn.hh,
iface/gspn/ltlgspn.cc, iface/gspn/simple.test, iface/gspn/ssp.cc,
iface/gspn/ssp.hh, iface/gspn/udcsefm.test, iface/gspn/udcseltl.test,
iface/gspn/udcsfm.test, iface/gspn/udcsltl.test, src/Makefile.am,
src/bin/Makefile.am, src/bin/common_cout.cc, src/bin/common_cout.hh,
src/bin/common_finput.cc, src/bin/common_finput.hh,
src/bin/common_output.cc, src/bin/common_output.hh,
src/bin/common_post.cc, src/bin/common_post.hh, src/bin/common_r.cc,
src/bin/common_r.hh, src/bin/common_range.cc, src/bin/common_range.hh,
src/bin/common_setup.cc, src/bin/common_setup.hh,
src/bin/common_sys.hh, src/bin/genltl.cc, src/bin/ltl2tgba.cc,
src/bin/ltl2tgta.cc, src/bin/ltlfilt.cc, src/bin/man/Makefile.am,
src/bin/randltl.cc, src/eltlparse/Makefile.am,
src/eltlparse/eltlparse.yy, src/eltlparse/eltlscan.ll,
src/eltlparse/fmterror.cc, src/eltlparse/parsedecl.hh,
src/eltlparse/public.hh, src/eltltest/Makefile.am,
src/eltltest/acc.cc, src/eltltest/acc.test, src/eltltest/defs.in,
src/eltltest/nfa.cc, src/eltltest/nfa.test, src/evtgba/Makefile.am,
src/evtgba/evtgba.cc, src/evtgba/evtgba.hh, src/evtgba/evtgbaiter.hh,
src/evtgba/explicit.cc, src/evtgba/explicit.hh, src/evtgba/product.cc,
src/evtgba/product.hh, src/evtgba/symbol.cc, src/evtgba/symbol.hh,
src/evtgbaalgos/Makefile.am, src/evtgbaalgos/dotty.cc,
src/evtgbaalgos/dotty.hh, src/evtgbaalgos/reachiter.cc,
src/evtgbaalgos/reachiter.hh, src/evtgbaalgos/save.cc,
src/evtgbaalgos/save.hh, src/evtgbaalgos/tgba2evtgba.cc,
src/evtgbaalgos/tgba2evtgba.hh, src/evtgbaparse/Makefile.am,
src/evtgbaparse/evtgbaparse.yy, src/evtgbaparse/evtgbascan.ll,
src/evtgbaparse/fmterror.cc, src/evtgbaparse/parsedecl.hh,
src/evtgbaparse/public.hh, src/evtgbatest/Makefile.am,
src/evtgbatest/defs.in, src/evtgbatest/explicit.cc,
src/evtgbatest/explicit.test, src/evtgbatest/ltl2evtgba.cc,
src/evtgbatest/ltl2evtgba.test, src/evtgbatest/product.cc,
src/evtgbatest/product.test, src/evtgbatest/readsave.cc,
src/evtgbatest/readsave.test, src/kripke/Makefile.am,
src/kripke/fairkripke.cc, src/kripke/fairkripke.hh,
src/kripke/kripke.cc, src/kripke/kripke.hh,
src/kripke/kripkeexplicit.cc, src/kripke/kripkeexplicit.hh,
src/kripke/kripkeprint.cc, src/kripke/kripkeprint.hh,
src/kripkeparse/Makefile.am, src/kripkeparse/fmterror.cc,
src/kripkeparse/kripkeparse.yy, src/kripkeparse/kripkescan.ll,
src/kripkeparse/parsedecl.hh, src/kripkeparse/public.hh,
src/kripkeparse/scankripke.ll, src/kripketest/Makefile.am,
src/kripketest/bad_parsing.test, src/kripketest/defs.in,
src/kripketest/kripke.test, src/kripketest/parse_print_test.cc,
src/ltlast/Makefile.am, src/ltlast/allnodes.hh,
src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
src/ltlast/automatop.cc, src/ltlast/automatop.hh, src/ltlast/binop.cc,
src/ltlast/binop.hh, src/ltlast/bunop.cc, src/ltlast/bunop.hh,
src/ltlast/constant.cc, src/ltlast/constant.hh, src/ltlast/formula.cc,
src/ltlast/formula.hh, src/ltlast/formula_tree.cc,
src/ltlast/formula_tree.hh, src/ltlast/multop.cc,
src/ltlast/multop.hh, src/ltlast/nfa.cc, src/ltlast/nfa.hh,
src/ltlast/predecl.hh, src/ltlast/refformula.cc,
src/ltlast/refformula.hh, src/ltlast/unop.cc, src/ltlast/unop.hh,
src/ltlast/visitor.hh, src/ltlenv/Makefile.am, src/ltlenv/declenv.cc,
src/ltlenv/declenv.hh, src/ltlenv/defaultenv.cc,
src/ltlenv/defaultenv.hh, src/ltlenv/environment.hh,
src/ltlparse/Makefile.am, src/ltlparse/fmterror.cc,
src/ltlparse/ltlfile.cc, src/ltlparse/ltlfile.hh,
src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll,
src/ltlparse/parsedecl.hh, src/ltlparse/public.hh,
src/ltltest/Makefile.am, src/ltltest/consterm.cc,
src/ltltest/consterm.test, src/ltltest/defs.in, src/ltltest/equals.cc,
src/ltltest/equals.test, src/ltltest/kind.cc, src/ltltest/kind.test,
src/ltltest/length.cc, src/ltltest/length.test,
src/ltltest/lunabbrev.test, src/ltltest/nenoform.test,
src/ltltest/parse.test, src/ltltest/parseerr.test,
src/ltltest/readltl.cc, src/ltltest/reduc.cc, src/ltltest/reduc.test,
src/ltltest/reduccmp.test, src/ltltest/reducpsl.test,
src/ltltest/syntimpl.cc, src/ltltest/syntimpl.test,
src/ltltest/tostring.cc, src/ltltest/tostring.test,
src/ltltest/tunabbrev.test, src/ltltest/tunenoform.test,
src/ltltest/utf8.test, src/ltltest/uwrm.test,
src/ltlvisit/Makefile.am, src/ltlvisit/apcollect.cc,
src/ltlvisit/apcollect.hh, src/ltlvisit/clone.cc,
src/ltlvisit/clone.hh, src/ltlvisit/contain.cc,
src/ltlvisit/contain.hh, src/ltlvisit/destroy.cc,
src/ltlvisit/destroy.hh, src/ltlvisit/dotty.cc, src/ltlvisit/dotty.hh,
src/ltlvisit/dump.cc, src/ltlvisit/dump.hh, src/ltlvisit/lbt.cc,
src/ltlvisit/lbt.hh, src/ltlvisit/length.cc, src/ltlvisit/length.hh,
src/ltlvisit/lunabbrev.cc, src/ltlvisit/lunabbrev.hh,
src/ltlvisit/mark.cc, src/ltlvisit/mark.hh, src/ltlvisit/nenoform.cc,
src/ltlvisit/nenoform.hh, src/ltlvisit/postfix.cc,
src/ltlvisit/postfix.hh, src/ltlvisit/randomltl.cc,
src/ltlvisit/randomltl.hh, src/ltlvisit/reduce.cc,
src/ltlvisit/reduce.hh, src/ltlvisit/relabel.cc,
src/ltlvisit/relabel.hh, src/ltlvisit/simpfg.cc,
src/ltlvisit/simpfg.hh, src/ltlvisit/simplify.cc,
src/ltlvisit/simplify.hh, src/ltlvisit/snf.cc, src/ltlvisit/snf.hh,
src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh,
src/ltlvisit/tunabbrev.cc, src/ltlvisit/tunabbrev.hh,
src/ltlvisit/wmunabbrev.cc, src/ltlvisit/wmunabbrev.hh,
src/misc/Makefile.am, src/misc/acccompl.cc, src/misc/acccompl.hh,
src/misc/accconv.cc, src/misc/accconv.hh, src/misc/bareword.cc,
src/misc/bareword.hh, src/misc/bddalloc.cc, src/misc/bddalloc.hh,
src/misc/bddlt.hh, src/misc/bddop.cc, src/misc/bddop.hh,
src/misc/casts.hh, src/misc/escape.cc, src/misc/escape.hh,
src/misc/fixpool.hh, src/misc/freelist.cc, src/misc/freelist.hh,
src/misc/hash.hh, src/misc/hashfunc.hh, src/misc/intvcmp2.cc,
src/misc/intvcmp2.hh, src/misc/intvcomp.cc, src/misc/intvcomp.hh,
src/misc/ltstr.hh, src/misc/memusage.cc, src/misc/memusage.hh,
src/misc/minato.cc, src/misc/minato.hh, src/misc/modgray.cc,
src/misc/modgray.hh, src/misc/mspool.hh, src/misc/optionmap.cc,
src/misc/optionmap.hh, src/misc/random.cc, src/misc/random.hh,
src/misc/timer.cc, src/misc/timer.hh, src/misc/unique_ptr.hh,
src/misc/version.cc, src/misc/version.hh, src/neverparse/Makefile.am,
src/neverparse/fmterror.cc, src/neverparse/neverclaimparse.yy,
src/neverparse/neverclaimscan.ll, src/neverparse/parsedecl.hh,
src/neverparse/public.hh, src/saba/Makefile.am,
src/saba/explicitstateconjunction.cc,
src/saba/explicitstateconjunction.hh, src/saba/saba.cc,
src/saba/saba.hh, src/saba/sabacomplementtgba.cc,
src/saba/sabacomplementtgba.hh, src/saba/sabastate.hh,
src/saba/sabasucciter.hh, src/sabaalgos/Makefile.am,
src/sabaalgos/sabadotty.cc, src/sabaalgos/sabadotty.hh,
src/sabaalgos/sabareachiter.cc, src/sabaalgos/sabareachiter.hh,
src/sabatest/Makefile.am, src/sabatest/defs.in,
src/sabatest/sabacomplementtgba.cc, src/sanity/Makefile.am,
src/sanity/readme.test, src/sanity/style.test, src/ta/Makefile.am,
src/ta/ta.cc, src/ta/ta.hh, src/ta/taexplicit.cc,
src/ta/taexplicit.hh, src/ta/taproduct.cc, src/ta/taproduct.hh,
src/ta/tgta.cc, src/ta/tgta.hh, src/ta/tgtaexplicit.cc,
src/ta/tgtaexplicit.hh, src/ta/tgtaproduct.cc, src/ta/tgtaproduct.hh,
src/taalgos/Makefile.am, src/taalgos/dotty.cc, src/taalgos/dotty.hh,
src/taalgos/emptinessta.cc, src/taalgos/emptinessta.hh,
src/taalgos/minimize.cc, src/taalgos/minimize.hh,
src/taalgos/reachiter.cc, src/taalgos/reachiter.hh,
src/taalgos/statessetbuilder.cc, src/taalgos/statessetbuilder.hh,
src/taalgos/stats.cc, src/taalgos/stats.hh, src/taalgos/tgba2ta.cc,
src/taalgos/tgba2ta.hh, src/tgba/Makefile.am, src/tgba/bdddict.cc,
src/tgba/bdddict.hh, src/tgba/bddprint.cc, src/tgba/bddprint.hh,
src/tgba/formula2bdd.cc, src/tgba/formula2bdd.hh,
src/tgba/futurecondcol.cc, src/tgba/futurecondcol.hh,
src/tgba/public.hh, src/tgba/sba.hh, src/tgba/state.hh,
src/tgba/statebdd.cc, src/tgba/statebdd.hh, src/tgba/succiter.hh,
src/tgba/succiterconcrete.cc, src/tgba/succiterconcrete.hh,
src/tgba/taatgba.cc, src/tgba/taatgba.hh, src/tgba/tgba.cc,
src/tgba/tgba.hh, src/tgba/tgbabddconcrete.cc,
src/tgba/tgbabddconcrete.hh, src/tgba/tgbabddconcretefactory.cc,
src/tgba/tgbabddconcretefactory.hh,
src/tgba/tgbabddconcreteproduct.cc,
src/tgba/tgbabddconcreteproduct.hh, src/tgba/tgbabddcoredata.cc,
src/tgba/tgbabddcoredata.hh, src/tgba/tgbabddfactory.hh,
src/tgba/tgbaexplicit.cc, src/tgba/tgbaexplicit.hh,
src/tgba/tgbakvcomplement.cc, src/tgba/tgbakvcomplement.hh,
src/tgba/tgbaproduct.cc, src/tgba/tgbaproduct.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasafracomplement.hh,
src/tgba/tgbascc.cc, src/tgba/tgbascc.hh, src/tgba/tgbasgba.cc,
src/tgba/tgbasgba.hh, src/tgba/tgbatba.cc, src/tgba/tgbatba.hh,
src/tgba/tgbaunion.cc, src/tgba/tgbaunion.hh, src/tgba/wdbacomp.cc,
src/tgba/wdbacomp.hh, src/tgbaalgos/Makefile.am,
src/tgbaalgos/bfssteps.cc, src/tgbaalgos/bfssteps.hh,
src/tgbaalgos/cutscc.cc, src/tgbaalgos/cutscc.hh,
src/tgbaalgos/cycles.cc, src/tgbaalgos/cycles.hh,
src/tgbaalgos/degen.cc, src/tgbaalgos/degen.hh,
src/tgbaalgos/dotty.cc, src/tgbaalgos/dotty.hh,
src/tgbaalgos/dottydec.cc, src/tgbaalgos/dottydec.hh,
src/tgbaalgos/dupexp.cc, src/tgbaalgos/dupexp.hh,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/eltl2tgba_lacim.hh,
src/tgbaalgos/emptiness.cc, src/tgbaalgos/emptiness.hh,
src/tgbaalgos/emptiness_stats.hh, src/tgbaalgos/gtec/Makefile.am,
src/tgbaalgos/gtec/ce.cc, src/tgbaalgos/gtec/ce.hh,
src/tgbaalgos/gtec/explscc.cc, src/tgbaalgos/gtec/explscc.hh,
src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/gtec.hh,
src/tgbaalgos/gtec/nsheap.cc, src/tgbaalgos/gtec/nsheap.hh,
src/tgbaalgos/gtec/sccstack.cc, src/tgbaalgos/gtec/sccstack.hh,
src/tgbaalgos/gtec/status.cc, src/tgbaalgos/gtec/status.hh,
src/tgbaalgos/gv04.cc, src/tgbaalgos/gv04.hh, src/tgbaalgos/isdet.cc,
src/tgbaalgos/isdet.hh, src/tgbaalgos/isweakscc.cc,
src/tgbaalgos/isweakscc.hh, src/tgbaalgos/lbtt.cc,
src/tgbaalgos/lbtt.hh, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2taa.hh, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_fm.hh, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/ltl2tgba_lacim.hh, src/tgbaalgos/magic.cc,
src/tgbaalgos/magic.hh, src/tgbaalgos/minimize.cc,
src/tgbaalgos/minimize.hh, src/tgbaalgos/ndfs_result.hxx,
src/tgbaalgos/neverclaim.cc, src/tgbaalgos/neverclaim.hh,
src/tgbaalgos/postproc.cc, src/tgbaalgos/postproc.hh,
src/tgbaalgos/powerset.cc, src/tgbaalgos/powerset.hh,
src/tgbaalgos/projrun.cc, src/tgbaalgos/projrun.hh,
src/tgbaalgos/randomgraph.cc, src/tgbaalgos/randomgraph.hh,
src/tgbaalgos/reachiter.cc, src/tgbaalgos/reachiter.hh,
src/tgbaalgos/reducerun.cc, src/tgbaalgos/reducerun.hh,
src/tgbaalgos/reductgba_sim.cc, src/tgbaalgos/reductgba_sim.hh,
src/tgbaalgos/replayrun.cc, src/tgbaalgos/replayrun.hh,
src/tgbaalgos/rundotdec.cc, src/tgbaalgos/rundotdec.hh,
src/tgbaalgos/safety.cc, src/tgbaalgos/safety.hh,
src/tgbaalgos/save.cc, src/tgbaalgos/save.hh, src/tgbaalgos/scc.cc,
src/tgbaalgos/scc.hh, src/tgbaalgos/sccfilter.cc,
src/tgbaalgos/sccfilter.hh, src/tgbaalgos/se05.cc,
src/tgbaalgos/se05.hh, src/tgbaalgos/simulation.cc,
src/tgbaalgos/simulation.hh, src/tgbaalgos/stats.cc,
src/tgbaalgos/stats.hh, src/tgbaalgos/tau03.cc,
src/tgbaalgos/tau03.hh, src/tgbaalgos/tau03opt.cc,
src/tgbaalgos/tau03opt.hh, src/tgbaalgos/weight.cc,
src/tgbaalgos/weight.hh, src/tgbaparse/Makefile.am,
src/tgbaparse/fmterror.cc, src/tgbaparse/parsedecl.hh,
src/tgbaparse/public.hh, src/tgbaparse/tgbaparse.yy,
src/tgbaparse/tgbascan.ll, src/tgbatest/Makefile.am,
src/tgbatest/babiak.test, src/tgbatest/bddprod.test,
src/tgbatest/complementation.cc, src/tgbatest/complementation.test,
src/tgbatest/cycles.test, src/tgbatest/defs.in,
src/tgbatest/degendet.test, src/tgbatest/degenid.test,
src/tgbatest/dfs.test, src/tgbatest/dupexp.test,
src/tgbatest/eltl2tgba.test, src/tgbatest/emptchk.test,
src/tgbatest/emptchke.test, src/tgbatest/emptchkr.test,
src/tgbatest/explicit.cc, src/tgbatest/explicit.test,
src/tgbatest/explicit2.cc, src/tgbatest/explicit2.test,
src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
src/tgbatest/explpro4.test, src/tgbatest/explprod.cc,
src/tgbatest/explprod.test, src/tgbatest/intvcmp2.cc,
src/tgbatest/intvcomp.cc, src/tgbatest/intvcomp.test,
src/tgbatest/kv.test, src/tgbatest/ltl2neverclaim.test,
src/tgbatest/ltl2ta.test, src/tgbatest/ltl2tgba.cc,
src/tgbatest/ltl2tgba.test, src/tgbatest/ltlcounter.test,
src/tgbatest/ltlprod.cc, src/tgbatest/ltlprod.test,
src/tgbatest/mixprod.cc, src/tgbatest/mixprod.test,
src/tgbatest/neverclaimread.test, src/tgbatest/nondet.test,
src/tgbatest/obligation.test, src/tgbatest/powerset.cc,
src/tgbatest/randpsl.test, src/tgbatest/randtgba.cc,
src/tgbatest/randtgba.test, src/tgbatest/readsave.test,
src/tgbatest/renault.test, src/tgbatest/scc.test,
src/tgbatest/sccsimpl.test, src/tgbatest/spotlbtt.test,
src/tgbatest/spotlbtt2.test, src/tgbatest/taatgba.cc,
src/tgbatest/taatgba.test, src/tgbatest/tgbaread.cc,
src/tgbatest/tgbaread.test, src/tgbatest/tripprod.cc,
src/tgbatest/tripprod.test, src/tgbatest/wdba.test,
src/tgbatest/wdba2.test, wrap/Makefile.am, wrap/python/Makefile.am,
wrap/python/ajax/Makefile.am, wrap/python/ajax/spot.in,
wrap/python/buddy.i, wrap/python/spot.i,
wrap/python/tests/Makefile.am, wrap/python/tests/alarm.py,
wrap/python/tests/bddnqueen.py, wrap/python/tests/implies.py,
wrap/python/tests/interdep.py, wrap/python/tests/ltl2tgba.py,
wrap/python/tests/ltl2tgba.test, wrap/python/tests/ltlparse.py,
wrap/python/tests/ltlsimple.py, wrap/python/tests/minato.py,
wrap/python/tests/modgray.py, wrap/python/tests/optionmap.py,
wrap/python/tests/parsetgba.py, wrap/python/tests/run.in,
wrap/python/tests/setxor.py: Update licence version, and replace the
FSF address by a URL.

We need a marked version of !{r} to perform breakpoint unroling.

* src/ltlast/unop.cc, src/ltlast/unop.hh: Declare a NegClosureMarked
operator.
* src/ltlvisit/mark.hh, src/ltlvisit/mark.cc,
src/tgbaalgos/ltl2tgba_fm.cc: Adjust to deal with NegClosureMarked
and NegClosure as apropriate.
* src/ltlvisit/simplify.cc, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc, src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgba/formula2bdd.cc: Deal with NegClosureMarked in the same way as
we deal with NegClosure.
* src/tgbatest/ltl2tgba.test: More tests.
* src/ltltest/kind.test: Adjust.
* doc/tl/tl.tex: Mention the marked negated closure.

* src/ltlvisit/tostring.cc (spin_kw): Output X, not ().

The distinction makes no sense since Spot 0.5, where we switched from
mutable furmulae to immutable formulae.  The difference between
const_visitor and visitor made no sense either.  They have been merged
into one: visitor.

* iface/dve2/dve2check.cc, iface/gspn/ltlgspn.cc,
src/eltlparse/eltlparse.yy, src/eltlparse/public.hh,
src/evtgbatest/ltl2evtgba.cc, src/kripkeparse/kripkeparse.yy,
src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
src/ltlast/automatop.cc, src/ltlast/automatop.hh, src/ltlast/binop.cc,
src/ltlast/binop.hh, src/ltlast/bunop.cc, src/ltlast/bunop.hh,
src/ltlast/constant.cc, src/ltlast/constant.hh, src/ltlast/formula.cc,
src/ltlast/formula.hh, src/ltlast/formula_tree.cc,
src/ltlast/formula_tree.hh, src/ltlast/multop.cc,
src/ltlast/multop.hh, src/ltlast/predecl.hh, src/ltlast/refformula.cc,
src/ltlast/refformula.hh, src/ltlast/unop.cc, src/ltlast/unop.hh,
src/ltlast/visitor.hh, src/ltlenv/declenv.cc, src/ltlenv/declenv.hh,
src/ltlenv/defaultenv.cc, src/ltlenv/defaultenv.hh,
src/ltlenv/environment.hh, src/ltlparse/ltlfile.cc,
src/ltlparse/ltlfile.hh, src/ltlparse/ltlparse.yy,
src/ltlparse/public.hh, src/ltltest/consterm.cc,
src/ltltest/equals.cc, src/ltltest/genltl.cc, src/ltltest/kind.cc,
src/ltltest/length.cc, src/ltltest/randltl.cc, src/ltltest/readltl.cc,
src/ltltest/reduc.cc, src/ltltest/syntimpl.cc,
src/ltltest/tostring.cc, src/ltlvisit/apcollect.cc,
src/ltlvisit/apcollect.hh, src/ltlvisit/clone.cc,
src/ltlvisit/clone.hh, src/ltlvisit/contain.cc,
src/ltlvisit/contain.hh, src/ltlvisit/dotty.cc,
src/ltlvisit/length.cc, src/ltlvisit/lunabbrev.cc,
src/ltlvisit/lunabbrev.hh, src/ltlvisit/mark.cc, src/ltlvisit/mark.hh,
src/ltlvisit/nenoform.cc, src/ltlvisit/nenoform.hh,
src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh,
src/ltlvisit/randomltl.cc, src/ltlvisit/randomltl.hh,
src/ltlvisit/reduce.cc, src/ltlvisit/reduce.hh,
src/ltlvisit/simpfg.cc, src/ltlvisit/simpfg.hh,
src/ltlvisit/simplify.cc, src/ltlvisit/simplify.hh,
src/ltlvisit/snf.cc, src/ltlvisit/snf.hh, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc, src/ltlvisit/tunabbrev.hh,
src/ltlvisit/wmunabbrev.cc, src/ltlvisit/wmunabbrev.hh,
src/neverparse/neverclaimparse.yy, src/sabatest/sabacomplementtgba.cc,
src/tgba/bdddict.cc, src/tgba/formula2bdd.cc, src/tgba/taatgba.cc,
src/tgba/taatgba.hh, src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_lacim.cc, src/tgbaalgos/minimize.cc,
src/tgbaalgos/randomgraph.cc, src/tgbaparse/tgbaparse.yy,
src/tgbatest/complementation.cc, src/tgbatest/ltl2tgba.cc,
src/tgbatest/ltlprod.cc, src/tgbatest/mixprod.cc,
src/tgbatest/randtgba.cc: Massive adjustment!
* src/tgbatest/reductgba.cc: Delete.

* src/ltlvisit/wmunabbrev.hh, src/ltlvisit/wmunabbrev.cc: New files.
* src/ltlvisit/Makefile.am: Add them.
* src/ltlvisit/tostring.cc (to_spin_string): Use the new rewriting.
* wrap/python/ajax/spot.in: Warn when a "Spin" still contain PSL
operators.
* wrap/python/ajax/ltl2tgba.html: Adjust help text.
* doc/tl/tl.tex, NEWS: Document the new rewriting.

* src/ltlparse/ltlscan.ll: Understand the combining overline, and
combining overbar as synonym for =0.
* src/ltlvisit/tostring.cc: Emit a combining overline for
single-letter atomic propositions.
* src/ltlast/atomic_prop.hh (is_atomic_prop): New function.
* doc/tl/tl.tex: Document these two characters.

* src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh: Here.
* src/ltltest/randltl.cc: Add option -8 to display utf-8 formulae.
* src/ltltest/utf8.test: Test it.

It was a mistake to try to overload And/Or LTL operator for these when
trivial simplification are performed.  The reason is so simple it is
embarassing: And(f,1)=f is a trivial identity that should not be
applied with AndRat.  E.g. AndRat(a;b, 1) is equal to 0, not a;b.

* src/ltlast/multop.hh, src/ltlast/multop.cc: Add the AndRat and OrRat
operators.
* src/ltlparse/ltlparse.yy: Build them.
* src/ltlvisit/mark.cc, src/ltlvisit/simplify.cc,
src/ltlvisit/tostring.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc:
Adjust all switches.

* src/ltlast/bunop.hh, src/ltlast/bunop.cc, src/ltlvisit/randomltl.cc,
src/ltlvisit/simplify.cc, src/ltlvisit/tostring.cc,
src/tgbaalgos/ltl2tgba_fm.cc: Remove all traces of these two
operators since they are not handled like sugar.
* doc/tl/tl.tex: Adjust documentation to reflect the fact that these
two operators are sugar.

* src/ltlast/bunop.hh (is_bunop, is_Star): New functions.
* src/ltlast/multop.hh (is_And, is_Or): Fix constness.
(is_Concat, is_Fusion): New functions.
* src/ltlast/unop.hh (is_unop, is_X, is_F, is_G, is_GF, is_FG):
Fix constness.
(is_Not): New function.
* src/ltlvisit/tostring.cc (strip_star_not, match_goto,
emit_bunop_child, resugar_concat): New methods.
(visit(bunop)): Rewrite without calling format().  Detect the
[->i..j] pattern.
(visit(multop)): Call resugar_concat to detect [=i..j] patterns.

* src/ltlvisit/tostring.cc (to_string_visitor): Take a list of
keywords as fourth argument.
(to_spin_string_visitor): Remove.
(to_string, to_spin_string): Adjust usage of to_string_visitor.

* src/ltlvisit/tostring.cc (to_string_visitor): Here.

* src/ltlast/multop.hh (is_multop): Take a constant formula as input.
* src/ltlvisit/tostring.cc (to_string_visitor::visit(multop*)):
Output []=> or <>=> when the left argument of a []-> or <>-> is
a concatenation that ends in 1.
* doc/tl/tl.tex: Document this desugaring.

* src/ltlparse/ltlscan.ll: Recognize }!.  Also remove
five duplicate rules.
* src/ltlparse/ltlparse.yy: Build {r}<>->1 when parsing {r}!.
* src/ltlvisit/tostring.cc: Print {r}! instead of {r}<>->1.
* src/ltltest/tostring.test, src/ltltest/equals.test:
Add more tests.

* src/ltlvisit/tostring.hh, src/ltlvisit/tostring.cc (to_string):
Add third option to enable formating suitable for SERE.

They are too slow.

* src/ltlast/formula.hh (opkind, kind, kind_): Use an enum
to indicate the actual kind of the formula.  This way we can
check the kind of a formula without relying on dynamic_cast.
* src/ltlast/atomic_prop.cc, src/ltlast/automatop.cc,
src/ltlast/binop.cc, src/ltlast/bunop.cc, src/ltlast/constant.cc,
src/ltlast/multop.cc, src/ltlast/refformula.cc,
src/ltlast/refformula.hh, src/ltlast/unop.cc: Adjust constructors.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/mark.cc,
src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc: Replace all dynamic_cast by a
call to kind() followed by a static_cast.

* src/ltlast/bunop.cc (bunop::format): Output [*1..] as [+].
* src/ltlvisit/tostring.cc: Output "a*" as "a[*]" for consistency.
* src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll: Recognize [+].
* src/ltltest/tostring.test, src/ltltest/equals.test,
src/tgbatest/ltl2tgba.test: More tests.

* src/ltlast/bunop.hh, src/ltlast/bunop.cc: New files for
bounded unary operators.
* src/ltlast/Makefile.am, src/ltlast/allnodes.hh: Add them.
* src/ltlast/predecl.hh (bunop): Declare.
* src/ltlast/unop.hh, src/ltlast/unop.cc (Star): Remove
declaration of Star and associated code.
* src/ltlast/visitor.hh: Add visit(bunop* node) methods.
* src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll: Add parse
rules for LTL.  This required passing the parse_error list
to the lexer, so it can report scanning errors when it reads
a number that does not fit in an unsigned int.
* src/ltlparse/parsedecl.hh (YY_DECL): Take error_list
as third argument.
* src/ltltest/consterm.test, src/ltltest/tostring.test,
src/ltltest/equals.test, src/tgbatest/ltl2tgba.test: More tests.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/clone.cc,
src/ltlvisit/clone.hh, src/ltlvisit/consterm.cc,
src/ltlvisit/dotty.cc, src/ltlvisit/mark.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/postfix.cc,
src/ltlvisit/postfix.hh, src/ltlvisit/reduce.cc,
src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2tgba_lacim.cc: Adjust syntax to use
"bunop::Star" instead of "unop::Star".
* src/tgbaalgos/ltl2tgba_fm.cc: Likewise, but also adjust
the code to handle the bounds of the operator.

* src/ltlvisit/tostring.cc: Use braces for unary operators in
Star.
* src/ltltest/tostring.test: Add some PSL formulae, it cannot
hurt.

* src/ltlparse/ltlparse.yy: Recognize "*" as "1*".
* src/ltlvisit/tostring.cc: Abbreviate "1*" as "*".
* src/tgbatest/ltl2tgba.test: Use the new syntax.

* src/ltlast/multop.cc, src/ltlast/multop.hh: Declare AndNML
operator.
* src/ltlparse/ltlscan.ll: Distinguish "&" and "&&".
* src/ltlparse/ltlparse.yy: Handle them both as "And" for LTL
formula, use AndNML or And for rational expressions.
* src/ltlvisit/tostring.cc: Adjust to distinguish "&" and "&&" in
rational expressions. Also use {braces} to group rational
expressions.
* src/tgbaalgos/ltl2tgba_fm.cc
(ratexp_trad_visitor::ratexp_trad_visitor): Remove the possibility
to select the empty_word should act like true, and fix the rules
for Closure and NegClosure to rely on constant_term instead.
(ratexp_trad_visitor::visit) Adjust the And translation to also
support AndNML.
(ratexp_trad_visitor::recurse_and_concat): Introduce this new
method to simplify some calls to recurse(f, to_concat_).
* src/tgbatest/ltl2tgba.test: Add more test cases.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/consterm.cc,
src/ltlvisit/contain.cc, src/ltlvisit/mark.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/syntimpl.cc,
src/tgba/formula2bdd.cc, src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_lacim.cc: Add
missing cases in switches.

* src/ltlast/unop.hh, src/ltlast/unop.cc: Introduce Closure and
NegClosure operators.
* src/ltlparse/ltlparse.yy: Recognize {foo} as a Closure.
* src/ltlvisit/mark.cc: Consider NegClosure as a marked operator.
* src/tgbaalgos/ltl2tgba_fm.cc (ratexp_trad_visitor): Add option to
select whether the empty_word should act like true (for {SERE}
and {!SERE}) or false (for {SERE}<>->Exp or {SERE}[]->Exp).
(ltl_trad_visitor): Translate Closure and NegClosure.
* src/tgbatest/ltl2tgba.test: Add more tests.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/consterm.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/reduce.cc,
src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc: Straightforward update to support or
assert on these new operators.

* src/ltlast/multop.hh (multop::type::Fusion): New operator.
* src/ltlast/multop.cc: Handle it.
* src/ltlparse/ltlparse.yy: Declare OP_FUSION and add grammar
rules.
* src/ltlparse/ltlscan.ll: Recognize ":" as OP_FUSION.
* src/tgbaalgos/ltl2tgba_fm.cc (ratexp_trad_visitor::visit):
Add translation rule for multop::Fusion.
* src/tgbatest/ltl2tgba.test: Add more tests.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/consterm.cc,
src/ltlvisit/contain.cc, src/ltlvisit/mark.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2tgba_lacim.cc: Handle multop::Fusion in switches.

* src/ltlast/binop.cc, src/ltlast/binop.hh: Introduce
EConcatMarked ("<>+>").
* src/ltlvisit/basicreduce.cc, src/ltlvisit/consterm.cc,
src/ltlvisit/lunabbrev.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/reduce.cc, src/ltlvisit/simpfg.cc,
src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/ltl2tgba_lacim.cc, src/tgba/formula2bdd.cc,
src/tgba/formula2bdd.cc: Deal with it if possible or ignore
it.

* src/ltlast/binop.hh, src/ltlast/binop.cc (EConcat, UConcat):
Add these new operators.
* src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll: Parse
these new operators.
* src/ltlvisit/simpfg.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc, src/ltlvisit/basicreduce.cc,
src/ltlvisit/consterm.cc, src/ltlvisit/lunabbrev.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/reduce.cc
src/tgba/formula2bdd.cc, src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_lacim.cc: Add these new operators into the
switches.

Trivial simplifications rules (such as "FFa=Fa" or "x&1=x")
are performed any time a formule is instanciated.

* src/ltlast/constant.hh, src/ltlast/constant.cc
(true_instance, true_instance_): Declare the true_instance_ as a
static member, and move true_instance() into the .hh so it gets
inlined.  Have true_instance_ as a class variable will ensure that
it is the first formula instantiated.  Binop simplifications rely
on this to order arguments.
(false_instance, false_instance_): Likewise.
(empty_word_instance, empty_word_instance_): New method and static
member.
* src/ltlast/formula.hh (formula::formula): If max_count_ ever
loops, skip the first three values so that constants always have
smaller hash codes.
* src/ltlast/binop.hh, src/ltlast/binop.cc (instance): Add
simplifications and document them.
* src/ltlast/multop.hh (multop::Concat): New operator.
* src/ltlast/multop.cc (op_name): Handle Concat.
(instance): Inline Concat arguments without reordering.  Handle
absorbent and neutral elements for all operators.
* src/ltlast/unop.hh (unop::Star): New operator.
* src/ltlast/unop.cc (op_name): Handle Star.
(instance): Handle Star, and add trivial simplifications for
other unary operators.
* src/ltlparse/ltlparse.yy (OP_CONCAT, OP_STAR, CONST_EMPTYWORD):
Declare these new operators and add rules for them.
* src/ltlparse/ltlscan.ll (OP_CONCAT, OP_STAR, CONST_EMPTYWORD):
Output these new operators.
* src/ltltest/equals.test: New tests.
* src/ltltest/parse.test: Remove redundant test.
* src/ltltest/tunabbrev.test, src/tgbatest/emptchk.test: Adjust tests.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/contain.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/reduce.cc,
src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc: Complete visitors to handle new
operators.
* src/ltltest/nenoform.test: More tests.
* src/ltlvisit/lunabbrev.cc (unabbreviate_logic_visitor::visit):
Clone formulae before instance() function actually have a chance
to destroy them.
* src/tgba/formula2bdd.cc, src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_lacim.cc: Adjust switches to assert on new
operators.

* src/ltlvisit/tostrinc.hh (to_spin_string): Add a full_parent
optional parameter, like for the to_string() function.
* src/ltlvisit/tostrinc.cc (to_string_visitor): Fix the
handling of full_parent.
(to_spin_string_visitor): Handle full_parent.

* src/ltlast/binop.cc, src/ltlast/binop.cc: Add support for
these new operators.
* src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll: Parse them.
* src/ltltest/reduccmp.test: Add new tests for W and M.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/contain.cc,
src/ltlvisit/lunabbrev.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/randomltl.cc, src/ltlvisit/randomltl.hh,
src/ltlvisit/reduce.cc, src/ltlvisite/simpfg.cc,
src/ltlvisit/simpfg.hh, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc:
Add support for W and M.
* src/tgbatest/ltl2neverclaim.test: Test never claim output
using LBTT, this is more thorough.  Also we cannot use -N
any more in the spotlbtt.test.
* src/tgbatests/ltl2tgba.cc: Define M and W for ELTL.
* src/tgbatest/ltl2neverclaim.test: Test W and M, and use
-DS instead of -N, because lbtt-translate does not want
to translate these operators for tools that masquerade as Spin.

* bench/Makefile.am, bench/gspn-ssp/Makefile.am,
bench/gspn-ssp/defs.in, bench/scc-stats/Makefile.am,
bench/split-product/Makefile.am, configure.ac,
iface/Makefile.am, iface/gspn/Makefile.am, iface/gspn/ssp.hh,
iface/nips/Makefile.am, iface/nips/common.cc,
iface/nips/common.hh, iface/nips/dottynips.cc,
iface/nips/nips.cc, iface/nips/nips.hh, src/Makefile.am,
src/eltlparse/Makefile.am, src/eltlparse/eltlparse.yy,
src/eltlparse/eltlscan.ll, src/eltlparse/fmterror.cc,
src/eltlparse/parsedecl.hh, src/eltltest/Makefile.am,
src/eltltest/defs.in, src/eltltest/nfa.cc, src/evtgba/evtgba.hh,
src/evtgba/product.cc, src/evtgba/product.hh,
src/evtgbaalgos/tgba2evtgba.cc, src/evtgbaparse/Makefile.am,
src/evtgbaparse/evtgbaparse.yy, src/evtgbatest/defs.in,
src/evtgbatest/explicit.test, src/evtgbatest/ltl2evtgba.cc,
src/evtgbatest/ltl2evtgba.test, src/evtgbatest/product.cc,
src/evtgbatest/product.test, src/evtgbatest/readsave.cc,
src/evtgbatest/readsave.test, src/ltlast/atomic_prop.cc,
src/ltlast/atomic_prop.hh, src/ltlast/binop.cc,
src/ltlast/binop.hh, src/ltlast/constant.cc,
src/ltlast/constant.hh, src/ltlast/formula.cc,
src/ltlast/formula.hh, src/ltlast/formula_tree.cc,
src/ltlast/formula_tree.hh, src/ltlast/multop.cc,
src/ltlast/multop.hh, src/ltlast/nfa.cc, src/ltlast/nfa.hh,
src/ltlast/unop.cc, src/ltlast/unop.hh, src/ltlenv/declenv.cc,
src/ltlenv/declenv.hh, src/ltlenv/environment.hh,
src/ltlparse/Makefile.am, src/ltlparse/ltlparse.yy,
src/ltltest/Makefile.am, src/ltltest/defs.in,
src/ltltest/equals.cc, src/ltltest/equals.test,
src/ltltest/lunabbrev.test, src/ltltest/nenoform.test,
src/ltltest/parse.test, src/ltltest/parseerr.test,
src/ltltest/randltl.cc, src/ltltest/readltl.cc,
src/ltltest/reduccmp.test, src/ltltest/syntimpl.cc,
src/ltltest/syntimpl.test, src/ltltest/tostring.cc,
src/ltltest/tostring.test, src/ltltest/tunabbrev.test,
src/ltltest/tunenoform.test, src/ltlvisit/basicreduce.cc,
src/ltlvisit/clone.cc, src/ltlvisit/clone.hh,
src/ltlvisit/contain.cc, src/ltlvisit/destroy.cc,
src/ltlvisit/destroy.hh, src/ltlvisit/lunabbrev.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/randomltl.cc,
src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc, src/misc/bddalloc.cc,
src/misc/bddop.cc, src/misc/bddop.hh, src/misc/freelist.hh,
src/misc/hash.hh, src/misc/minato.cc, src/misc/minato.hh,
src/misc/optionmap.cc, src/misc/timer.cc, src/misc/timer.hh,
src/saba/Makefile.am, src/saba/explicitstateconjunction.cc,
src/saba/explicitstateconjunction.hh, src/saba/saba.cc,
src/saba/saba.hh, src/saba/sabacomplementtgba.cc,
src/saba/sabacomplementtgba.hh, src/saba/sabastate.hh,
src/saba/sabasucciter.hh, src/sabaalgos/Makefile.am,
src/sabaalgos/sabadotty.cc, src/sabaalgos/sabadotty.hh,
src/sabaalgos/sabareachiter.cc, src/sabaalgos/sabareachiter.hh,
src/sabatest/Makefile.am, src/sabatest/defs.in,
src/sanity/Makefile.am, src/tgba/Makefile.am,
src/tgba/bdddict.cc, src/tgba/bddprint.cc,
src/tgba/formula2bdd.cc, src/tgba/state.hh,
src/tgba/succiterconcrete.cc, src/tgba/taatgba.hh,
src/tgba/tgba.hh, src/tgba/tgbabddconcretefactory.cc,
src/tgba/tgbabddconcretefactory.hh, src/tgba/tgbacomplement.cc,
src/tgba/tgbacomplement.hh, src/tgba/tgbaexplicit.cc,
src/tgba/tgbaexplicit.hh, src/tgba/tgbaproduct.cc,
src/tgba/tgbareduc.cc, src/tgba/tgbareduc.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasgba.cc,
src/tgba/tgbasgba.hh, src/tgba/tgbaunion.cc,
src/tgba/tgbaunion.hh, src/tgbaalgos/dupexp.cc,
src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/eltl2tgba_lacim.hh, src/tgbaalgos/emptiness.cc,
src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2taa.hh, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/neverclaim.cc, src/tgbaalgos/neverclaim.hh,
src/tgbaalgos/powerset.cc, src/tgbaalgos/reachiter.cc,
src/tgbaalgos/reachiter.hh, src/tgbaalgos/reductgba_sim.cc,
src/tgbaalgos/reductgba_sim.hh,
src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/stats.cc,
src/tgbaalgos/stats.hh, src/tgbaparse/Makefile.am,
src/tgbaparse/tgbaparse.yy, src/tgbatest/Makefile.am,
src/tgbatest/bddprod.test, src/tgbatest/complementation.cc,
src/tgbatest/complementation.test, src/tgbatest/defs.in,
src/tgbatest/dfs.test, src/tgbatest/dupexp.test,
src/tgbatest/explicit.cc, src/tgbatest/explicit.test,
src/tgbatest/explpro3.test, src/tgbatest/explpro4.test,
src/tgbatest/explprod.cc, src/tgbatest/explprod.test,
src/tgbatest/ltl2neverclaim.test, src/tgbatest/ltl2tgba.cc,
src/tgbatest/ltl2tgba.test, src/tgbatest/ltlprod.cc,
src/tgbatest/ltlprod.test, src/tgbatest/mixprod.cc,
src/tgbatest/mixprod.test, src/tgbatest/powerset.cc,
src/tgbatest/readsave.cc, src/tgbatest/readsave.test,
src/tgbatest/reduccmp.test, src/tgbatest/reductgba.cc,
src/tgbatest/reductgba.test, src/tgbatest/taatgba.cc,
src/tgbatest/tgbaread.cc, src/tgbatest/tgbaread.test,
src/tgbatest/tripprod.cc, src/tgbatest/tripprod.test,
wrap/python/cgi/ltl2tgba.in, wrap/python/tests/ltl2tgba.py,
wrap/python/tests/ltlparse.py, wrap/python/tests/ltlsimple.py:
Fix copyrights.

* src/ltlast/automatop.cc, src/ltlast/automatop.hh: Rename nfa as
get_nfa to avoid a name clash with the `nfa' class.
* src/ltlvisit/clone.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/tostring.cc, src/tgbaalgos/eltl2tgba_lacim.cc: Use
get_nfa instead of nfa.
* src/tgba/tgbasafracomplement.cc: Don't use a
const_reverse_iterator.

new keyword in the ELTL format: finish, which applies to an
automaton operator and tells whether it just completed.

* src/eltlparse/eltlparse.yy: Clean it. Add finish.
* src/eltlparse/eltlscan.ll: Add finish.
* src/formula_tree.cc, src/formula_tree.hh: New files. Define a
small AST representing formulae where atomic props are unknown
which is used in the ELTL parser.
* src/ltlast/automatop.cc, ltlast/automatop.hh, ltlast/nfa.cc,
ltlast/nfa.hh: Adjust.
* src/ltlast/unop.cc, src/ltlast/unop.hh: Finish is an unop.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc, src/ltlvisit/tunabbrev.cc,
src/tgba/formula2bdd.cc, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_lacim.cc: Handle finish in switches.
* src/tgbaalgos/eltl2tgba_lacim.cc: Translate finish.
* src/tgbatest/eltl2tgba.test: More tests.

* src/eltlparse/eltlparse.yy: Adjust.
* src/ltlast/automatop.cc, src/ltlast/automatop.hh,
src/ltlvisit/clone.cc, src/ltlvisit/nenoform.cc: Clean the way we
handle the negation of automaton operators.
* src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh: Add an
optional argument to output a fully parenthesized string.
* src/tgbaalgos/eltl2tgba_lacim.cc: Fix it.
* src/tgbatest/eltl2tgba.cc: Add a new option (-L) to read formulae
from an LBTT-compatible file.
* src/tgbatest/eltl2tgba.test: A new tests.
* src/tgbatest/spotlbtt.test: Add LaCIM for ELTL.

for ELTL.  This is a new version of the work started in 2008 with
LTL and ELTL formulae now sharing the same class hierarchy.

* configure.ac: Adjust for src/eltlparse/ and src/eltltest/
directories, and call AX_BOOST_BASE.
* m4/boost.m4: New file defining AX_BOOST_BASE([MINIMUM-VERSION]).
* src/Makefile.am: Add eltlparse and eltltest.
* src/eltlparse/: New directory.  Contains the ELTL parser.
* src/eltltest/: New directory.  Contains tests related to
ELTL (parser and AST).
* src/ltlast/Makefile.am: Adjust for ELTL AST files.
* src/ltlast/automatop.cc, src/ltlast/automatop.hh: New files.
Represent automaton operators nodes used in ELTL ASTs.
* src/ltlast/nfa.cc, src/ltlast/nfa.hh: New files.  Represent
simple NFAs used internally by automatop nodes.
* src/ltlast/allnode.hh, src/ltlast/predecl.hh,
src/ltlast/visitor.hh: Adjust for automatop.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/clone.cc,
src/ltlvisit/clone.hh, src/ltlvisit/contain.cc,
src/ltlvisit/dotty.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh,
src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc: Because LTL and ELTL formulae share the
same class hierarchy, LTL visitors need to handle automatop nodes
to compile.  When it's meaningful the visitor applies on automatop
nodes or simply assert(0) otherwise.
* src/tgba/tgbabddconcretefactory.cc (create_anonymous_state),
src/tgba/tgbabddconcretefactory.hh (create_anonymous_state): New
function used by the LaCIM translation algorithm for ELTL.
* src/tgbaalgos/Makefile.am: Adjust for eltl2tgba_lacim* files.
* src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/eltl2tgba_lacim.hh: New files.  Implementation of
the LaCIM translation algorithm for ELTL.
* src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc:
Handle automatop nodes in the translation by an assert(0).
* src/tgbatest/Makefile.am: Adjust for eltl2tgba.* files.
* src/src/tgbatest/eltl2tgba.cc, src/tgbatest/eltl2tgba.test: New
files

Here are the reverted patches:
8c0d1003,
25a31142,
9afbaf63,
dc0005f4,
543190f2.

Merge all ltlast/ files into formula.hh.  The forward declaration of visitor was causing error messages too cryptic for users.

* src/ltlast/formula.hh (hash): Remove const from return type.
This kills a g++-4.3 warning.
* src/misc/hash.hh: Adjust to use unordered_set and unordered_map
from TR1 when g++-4.3 is used.
* src/evtgba/product.cc, src/ltltest/randltl.cc,
src/ltlvisit/randomltl.cc, src/ltlvisit/tostring.cc,
src/misc/freelist.hh, src/misc/optionmap.cc,
src/tgba/tgbareduc.hh, src/tgbaalgos/gv04.cc,
src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/randomgraph.cc,
src/tgbatest/ltl2tgba.cc, src/tgbatest/randtgba.cc,
src/ltltest/equals.cc, src/ltltest/readltl.cc,
src/ltltest/reduc.cc, src/ltltest/syntimpl.cc,
src/ltltest/tostring.cc, src/tgbatest/ltlprod.cc,
src/tgbatest/powerset.cc, src/tgbatest/explprod.cc,
src/tgbatest/mixprod.cc, src/tgbatest/readsave.cc,
src/tgbatest/reductgba.cc, src/tgbatest/tgbaread.cc,
src/tgbatest/tripprod.cc, src/evtgbatest/product.cc,
src/evtgbatest/readsave.cc, src/evtgbatest/ltl2evtgba.cc,
src/evtgbatest/readsave.cc: Add missing includes.
* src/tgbatest/explicit.test, src/tgbatest/explprod.test,
src/tgbatest/explpro2.test, src/tgbatest/troprod.test,
src/tgbatest/emptchk.test: Cope with different outputs.