* src/bin/common_finput.cc (job_processor::process_stream): Read
multi-line CSV fields.
* src/ltltest/lbt.test, src/tgbatest/nondet.test: Add tests.

* NEWS: Mention it.
* src/bin/common_finput.cc, src/bin/common_finput.hh: Implement it.
* src/bin/common_output.cc, src/bin/common_output.hh: Add the %< and
%> escapes.
* src/bin/ltlfilt.cc: Connect %< and %> to the
prefix andsuffix of the input, and document them.
* src/tgbatest/det.test, src/tgbatest/nondet.test: Simplify these
tests that read CSV files.

* src/bin/common_finput.cc: Here.
* src/ltltest/ltlfilt.test: Test it.
* NEWS: Mention it.

* src/bin/common_finput.cc, src/tgbaalgos/lbtt.cc: Use !empty() instead
of size() > 0.
* src/bin/ltl2tgta.cc, src/kripke/kripkeexplicit.cc,
src/tgbatest/complementation.cc: Avoid useless assignments.
* src/bin/ltlcross.cc: Correct mistaken assignment inside assert().
* src/evtgba/symbol.hh, src/tgba/tgbabddcoredata.cc,
src/tgba/tgbabddcoredata.hh,
src/tgba/tgbasafracomplement.cc (operator=): Do not return a const
reference.
* src/evtgbatest/ltl2evtgba.cc, src/evtgbatest/product.cc,
src/evtgbatest/product.cc: Check indices before using them, not after.
* src/kripke/kripkeexplicit.cc, src/kripke/kripkeexplicit.hh,
src/tgbatest/randtgba.cc: Pass constant strings by reference.
* src/kripke/kripkeprint.cc, src/tgbaalgos/simulation.cc:
Remove a useless operation.
* src/ltlvisit/simplify.cc: Remove a duplicate condition.
* src/misc/formater.hh: Remove unused attribute.
* src/misc/modgray.cc: Initialize done_ in the constructor.
* src/saba/explicitstateconjunction.cc,
src/saba/explicitstateconjunction.hh (operator=): Fix prototype.
* src/saba/sabacomplementtgba.cc: Remove unused default constructor.
* src/ta/taexplicit.cc, src/ta/taproduct.cc, src/ta/tgtaproduct.cc,
src/ta/tgtaproduct.hh, src/taalgos/emptinessta.cc,
src/taalgos/minimize.cc, src/taalgos/reachiter.cc,
src/taalgos/tgba2ta.cc, src/tgbaalgos/cutscc.cc: Use C++ casts, and
++it instead of it++.
* src/taalgos/dotty.cc, src/tgbatest/ltl2tgba.cc: Refine the scope of
variables.
* src/tgba/tgbakvcomplement.hh (bdd_order): Always initialize bdd_.
* src/tgba/tgbasgba.cc, src/tgba/wdbacomp.cc: Use the initialization
line to initialize all members.

* src/bin/ltlcross.cc: Add the option.
* src/bin/common_finput.hh, src/bin/common_finput.cc: Make it possible
to abort run().

Spin 6 supports formulas such as []<>(a < b) so that atomic properties
need not be specified using #define.  Of course we don't want to
implement all the syntax of Spin in our LTL parser because other tools
may have different syntaxes for their atomic propositions.  The
lenient mode tells the scanner to return any (...), {...}, or {...}!
block as a single token.  The parser will try to recursively parse
this block as a LTL/SERE formula, and if this fails, it will consider
the block to be an atomic proposition.  The drawback is that most
syntax errors will no be considered to be atomic propositions.  For
instance (a U b U) is a single atomic proposition in lenient mode, and
a syntax error in default mode.

* src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll,
src/ltlparse/parsedecl.hh, src/ltlparse/public.hh: Add a
lenient parsing mode.  Simplify the lexer using yy_scan_string.
* src/bin/common_finput.cc: Add a --lenient option.
* src/ltltest/lenient.test: New file.
* src/ltltest/Makefile.am: Add it.
* src/neverparse/neverclaimparse.yy: Parse the guards in lenient mode.
* src/tgbatest/neverclaimread.test: Adjust.
* src/ltlvisit/tostring.cc: When outputing a formula in Spin's syntax,
output (a < b) instead of "a < b".
* src/misc/escape.cc, src/misc/escape.hh (trim): New helper function.

* 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, ifac...

* src/bin/common_finput.cc, src/bin/common_finput.hh: Define the
processor class.
* src/bin/ltl2tgba.cc, src/bin/ltl2tgta.cc, src/bin/ltlfilt.cc:
Simplify accordingly.

* src/bin/ltlfilt.cc: Extra input options into...
* src/bin/common_finput.cc, src/bin/common_finput.hh: ... these new
files...
* src/bin/ltl2tgba.cc: ... and use them here.
* src/bin/Makefile.am: Adjust.