algorithms to conform to it, uniformly.  This will unfortunately
break third-party code that were using these algorithms.
* src/tgbaalgos/emptiness.cc, src/tgbaalgos/emptiness.hh: New files.
* src/tgbaalgos/Makefile.am: New files.
* src/tgbaalgos/magic.cc, src/tgbaalgos/magic.hh: Adjust to
conform to the new emptiness-check interface.
* src/tgbaalgos/gtec/ce.cc, src/tgbaalgos/gtec/ce.hh,
src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/gtec.hh,
src/tgbaalgos/gtec/status.cc, src/tgbaalgos/gtec/status.hh:
Likewise.  The classes have been renamed are as following
  emptiness_check -> couvreur99_check
  emptiness_check_shy -> couvreur99_check_shy
  counter_example -> couvreur99_check_result
* src/tgbatest/ltl2tgba.cc, iface/gspn/ltlgspn.cc, iface/gspn/ssp.hh,
iface/gspn/ssp.cc: Adjust to renaming and new interface.

matter, for consistency.
* src/tgbaalgos/tarjan_on_fly.cc, iface/gspn/ssp.cc,
src/tgbaalgos/reductgba_sim_del.cc, src/tgbaalgos/reductgba_sim.cc,
src/tgbaalgos/minimalce.cc, src/tgba/tgbareduc.cc: Adjust.

comments.
* iface/gspn/ssp.cc (emptiness_check_shy_ssp::find_state): Likewise.
Soheib and I had a hard time figuring why we did this...

This fixes a memory leak observed by Soheib Baarir.

class gspn_environment, and move it to ...
* src/ltlenv/declenv.cc, src/ltlenv/declenv.hh: .. this new file
as class declarative_environment.
* src/ltlenv/Makefile.am (ltlenv_HEADERS): Add declenv.hh.
(libltlenv_la_SOURCES): Add declenv.cc.
* iface/gspn/dottygspn.cc, iface/gspn/dottyssp.cc,
iface/gspn/gspn.cc, iface/gspn/gspn.hh, iface/gspn/ltlgspn.cc,
iface/gspn/ssp.cc, iface/gspn/ssp.hh: Adjust references
to declarative_environment.

* iface/gspn/ssp.cc, src/ltltest/reduc.cc, src/ltltest/syntimpl.cc,
src/ltlvisit/basereduc.cc, src/ltlvisit/reducform.cc,
src/ltlvisit/syntimpl.cc: Use 0 instead of NULL.

the `inclusion' flag.
* iface/gspn/ssp.cc (gspn_ssp_interface::gspn_ssp_interface): Call
inclusion_version when inclusion is set.
* iface/gspn/ltlgspn.cc (main) [SSP]: Turn on inclusion for -e3,
-e4, and -e5.

* iface/gspn/gspn.cc, iface/gspn/ssp.cc: Fix style.

* iface/gspn/eesrg.cc, iface/gspn/eesrg.hh,
iface/gspn/dottyeesrg.cc: Rename as ...
* iface/gspn/ssp.cc, iface/gspn/ssp.hh, iface/gspn/dottyssp.cc:
... these.  Adjust all classes and function names.
* iface/gspn/ltlgspn.cc, iface/gspn/Makefile.am: Adjust all classes
filenames and function names.
* m4/gspnlib.m4: Define WITH_GSPN_SSP and LIBGSPNSSP_LDFLAGS.

Rewrite.
(numbered_state_heap_hash_map::index): New functions.
(numbered_state_heap_hash_map::filter): Delete.
* src/tgbaalgos/gtec/nsheap.hh
(numbered_state_heap_hash_map::index): New functions.
(numbered_state_heap_hash_map::filter): Delete.
* iface/gspn/eesrg.cc (numbered_state_heap_eesrg_semi::find,
numbered_state_heap_eesrg_semi::index): Rewrite.
(numbered_state_heap_eesrg_semi::filter): Remove.
* src/tgbaalgos/gtec/gtec.cc, src/tgbaalgos/gtec/ce.cc:
Adjust to use find() and index() instead of filter()..

Free filtered states.
(emptiness_check_shy_eesrg): New class.
(emptiness_check_eesrg_shy): New function.
* iface/gspn/eesrg.hh (emptiness_check_eesrg_shy): New function.
* iface/gspn/ltlgspn.cc (main) [EESRG]: Handle -e3, -e4, and -e5.
* * src/tgbaalgos/gtec/gtec.hh, src/tgbaalgos/gtec/gtec.cc
(emptiness_check_shy::check): Move arc, num, succ_queue, and todo
as attributes.
(emptiness_check_shy::find_state): New virtual function.

connected_component_eesrg_factory, numbered_state_heap_eesrg_semi,
numbered_state_heap_eesrg_const_iterator,
numbered_state_heap_eesrg_factory_semi): New classes.
(emptiness_check_eesrg_semi, emptiness_check_eesrg_shy_semi,
counter_example_eesrg): New functions.
* iface/gspn/eesrg.hh (emptiness_check_eesrg_semi,
emptiness_check_eesrg_shy_semi, counter_example_eesrg): New
functions.
* iface/gspn/ltlgspn.cc [EESRG]: Adjust to call these new functions.

state_gspn_eesrg): Compute the array of all successors of the
right state beforehand, pass it to Greatspn (left automata) at
once, let it compute the resulting synchronized arcs, and iterate
on that result.

corresponding automaton via the automaton() method of the
gspn_interface and gspn_eesrg_interface classes.

* iface/gspn/gspn.hh (gspn_interface::gspn_interface): Take dict and
env arguments.
(gspn_interface::automaton): New method.
(tgba_gspn): Move all the declaration ...
* iface/gspn/gspn.cc (tgba_gspn): ... here.
(gspn_interface::automaton): Implement it.
* iface/gspn/eesrg.hh (gspn_eesrg_interface::gspn_eesrg_interface):
Take dict and env arguments.
(gspn_eesrg_interface::automaton): New method.
(tgba_gspn_eesrg): Move all the declaration ...
* iface/gspn/gspn.cc (tgba_gspn_eesrg): ... here.
(gspn_eesrg_interface::automaton): Implement it.
* iface/gspn/dottygspn.cc, iface/gspn/dottyeesrg.cc,
iface/gspn/ltlgspn.cc: Adjust.

just strip the last one.  Escaping must be done at output.
* iface/gspn/gspm.cc (format_state): Likewise.
* src/misc/escape.hh, src/misc/escape.cc: New files.
* src/misc/Makefile.am: Add them.
* src/tgba/bddprint.cc (bdd_format_accset): New function.
* src/tgba/bddprint.hh (bdd_format_accset): New function.
* src/tgbaalgos/dotty.cc (dotty_bfs::process_state):
Escape the state name using escape_str().
(dotty_bfs::process_link): Escape conditions and acceptance
conditions using escape_str().
* src/tgbaalgos/save.cc (save_bfs::start): Call print_acc().
(save_bfs::print_acc): New function extracted from save_bfs::start().
Escape each acceptance condition.
(save_bfs::process_state): Use escape_str() and print_acc()

tgba_gspn_eesrg::neg_acceptance_conditions): Forward to
data_->operand.

state.

* iface/gspn/eesrg.hh: Likewise.

iface/gspn/gspn.hh, src/tgba/bdddict.cc, src/tgba/bdddict.hh,
src/tgba/bddprint.hh, src/tgba/succiter.hh,
src/tgba/succiterconcrete.cc, src/tgba/succiterconcrete.hh,
src/tgba/tgba.hh, src/tgba/tgbabddconcrete.cc,
src/tgba/tgbabddconcrete.hh, src/tgba/tgbabddconcretefactory.cc,
src/tgba/tgbabddconcretefactory.hh, src/tgba/tgbabddcoredata.cc,
src/tgba/tgbabddcoredata.hh, src/tgba/tgbaexplicit.cc,
src/tgba/tgbaexplicit.hh, src/tgba/tgbaproduct.cc,
src/tgba/tgbaproduct.hh, src/tgba/tgbatba.cc, src/tgba/tgbatba.hh,
src/tgbaalgos/dotty.cc, src/tgbaalgos/dupexp.cc,
src/tgbaalgos/emptinesscheck.cc, src/tgbaalgos/emptinesscheck.hh,
src/tgbaalgos/lbtt.cc, src/tgbaalgos/lbtt.hh,
src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/save.cc, src/tgbatest/explicit.cc,
src/tgbatest/ltl2tgba.cc, src/tgbaparse/tgbaparse.yy,
wrap/python/tests/ltl2tgba.py:
Rewrite `accepting condition' as `acceptance condition'.
The symbols which have been renamed are:
tgba::all_accepting_conditions
tgba::neg_accepting_conditions
succ_iterator::current_accepting_conditions
bdd_dict::register_accepting_variable
bdd_dict::register_accepting_variables
bdd_dict::is_registered_accepting_variable
tgba_bdd_concrete_factory::declare_accepting_condition
tgba_bdd_core_data::accepting_conditions
tgba_bdd_core_data::all_accepting_conditions
tgba_explicit::declare_accepting_condition
tgba_explicit::complement_all_accepting_conditions
tgba_explicit::has_accepting_condition
tgba_explicit::get_accepting_condition
tgba_explicit::add_accepting_condition
tgba_explicit::all_accepting_conditions
tgba_explicit::neg_accepting_conditions
state_tba_proxy::acceptance_cond
accepting_cond_splitter

* Makefile.am, configure.ac, doc/Makefile.am, iface/Makefile.am,
iface/gspn/Makefile.am, iface/gspn/common.cc,
iface/gspn/common.hh, iface/gspn/dottyeesrg.cc,
iface/gspn/dottygspn.cc, iface/gspn/eesrg.cc, iface/gspn/eesrg.hh,
iface/gspn/gspn.cc, iface/gspn/gspn.hh, iface/gspn/ltlgspn.cc,
src/Makefile.am, src/ltlast/Makefile.am, src/ltlast/allnodes.hh,
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/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/Makefile.am,
src/ltlenv/defaultenv.cc, src/ltlenv/defaultenv.hh,
src/ltlenv/environment.hh, src/ltlparse/Makefile.am,
src/ltlparse/fmterror.cc, src/ltlparse/ltlparse.yy,
src/ltlparse/ltlscan.ll, src/ltlparse/parsedecl.hh,
src/ltlparse/public.hh, 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/readltl.cc,
src/ltltest/tostring.cc, src/ltltest/tostring.test,
src/ltltest/tunabbrev.test, src/ltltest/tunenoform.test,
src/ltlvisit/Makefile.am, src/ltlvisit/clone.cc,
src/ltlvisit/clone.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/lunabbrev.cc, src/ltlvisit/lunabbrev.hh,
src/ltlvisit/nenoform.cc, src/ltlvisit/nenoform.hh,
src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh,
src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh,
src/ltlvisit/tunabbrev.cc, src/ltlvisit/tunabbrev.hh,
src/misc/Makefile.am, src/misc/bddalloc.cc, src/misc/bddalloc.hh,
src/misc/bddlt.hh, src/misc/hash.hh, src/misc/minato.cc,
src/misc/minato.hh, src/misc/version.cc, src/misc/version.hh,
src/tgba/Makefile.am, src/tgba/bdddict.cc, src/tgba/bdddict.hh,
src/tgba/bddprint.cc, src/tgba/bddprint.hh, src/tgba/public.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/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/tgbaproduct.cc, src/tgba/tgbaproduct.hh,
src/tgba/tgbatba.cc, src/tgba/tgbatba.hh,
src/tgbaalgos/Makefile.am, src/tgbaalgos/dotty.cc,
src/tgbaalgos/dotty.hh, src/tgbaalgos/dupexp.cc,
src/tgbaalgos/dupexp.hh, src/tgbaalgos/emptinesscheck.cc,
src/tgbaalgos/emptinesscheck.hh, src/tgbaalgos/lbtt.cc,
src/tgbaalgos/lbtt.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/reachiter.cc,
src/tgbaalgos/reachiter.hh, src/tgbaalgos/save.cc,
src/tgbaalgos/save.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/bddprod.test, src/tgbatest/defs.in,
src/tgbatest/dupexp.test, src/tgbatest/emptchk.test,
src/tgbatest/emptchke.test, src/tgbatest/explicit.test,
src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
src/tgbatest/explprod.test, src/tgbatest/ltl2tgba.test,
src/tgbatest/ltlprod.test, src/tgbatest/mixprod.test,
src/tgbatest/readsave.test, src/tgbatest/spotlbtt.test,
src/tgbatest/tgbaread.test, src/tgbatest/tripprod.test,
wrap/Makefile.am, wrap/python/Makefile.am, wrap/python/buddy.i,
wrap/python/spot.i, wrap/python/cgi/Makefile.am,
wrap/python/cgi/ltl2tgba.in, wrap/python/tests/Makefile.am,
wrap/python/tests/bddnqueen.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/run.in: Add Copyright license.

attribute.
(tgba_succ_iterator_gspn_eesrg::step): Use first_.  Loop until
succ returns some successors.
Report from Soheib Baarir.

the iteration logic.
(tgba_succ_iterator_gspn_eesrg::tgba_succ_iterator_gspn_eesrg): Make
sure not to free successors_ twice.
(tgba_succ_iterator_gspn_eesrg::done): Fix definition.

call get_init_state(), use 0 instead.
(tgba_gspn_eesrg::format_state): Handle the case where s->left() == 0.
Reported by Soheib Baarir.

Really Skip unknown variables.

Skip unknown variables.

(tgba_gspn_eesrg_private_::tgba_gspn_eesrg_private_): Show prop_index()
argument on error.

* iface/gspn/Makefile.am (gspn_HEADERS): Add common.hh.
(libspotgspn_la_SOURCES): Add common.cc.
(libspotgspneesrg_la_LIBADD, libspotgspneesrg_la_CPPFLAGS)
(libspotgspneesrg_la_SOURCES, ltlgspn_eesrg_SOURCES)
(dotty_eesrg_LDADD, dotty_eesrg_CPPFLAGS): New variables.
(lib_LTLIBRARIES): Add libspotgspneesrg.la.
(check_PROGRAMS): Add dottygspn-eesrg.
* iface/gspn/gspn.hh, iface/gspn/gspn.cc
(gspn_exeption, operator<<(gspn_exeption), gspn_environment): Move ...
* iface/gspn/common.hh, iface/gspn/common.cc: ... in these new files.
* iface/gspn/eesrg.hh, iface/gspn/eesrg.cc, iface/gspn/dottyeesrg.cc:
New files.