* sanity/style.test: More tests.

* HACKING: Mention `else if'.

space before colon, and do not output the top-level formula using
Spin's syntax.

* src/ltlvisit/lunabbrev.cc (spot): Nothing change.
* src/tgbatest/ltl2tgba.cc (main): More option to reduce
formula.
* src/tgbatest/spotlbtt.test: One more test.

to_string_visitor): Do not parenthesize the top-level formula.
* tgbatest/explicit.test, tgbatest/explpro2.test,
tgbatest/explpro3.test, tgbatest/explprod.test,
tgbatest/readsave.test, tgbatest/tgbaread.test,
tgbatest/tripprod.test: Adjust expected output.
* sanity/style.test: Fix regexes to catch an error seen in
tostring.cc.

Do not try to erase state that are not found in H.
Report from Soheib Baarir.

* src/ltltest/Makefile.am (CLEANFILES): Clean result.data.

* src/ltltest/inf.test: More test.
* src/ltlvisit/basereduc.cc, src/ltlvisit/forminf.cc (spot):
Use dynamic_cast.
* src/ltlvisit/reducform.cc, src/ltlvisit/reducform.hh,
src/ltltest/reduc.test, src/ltltest/reduc.cc: Add an option
to choose which rules applies to simplify the formula.

(subformula): Recognize `ATOMIC_PROP OP_POST_POS' and
`ATOMIC_PROP OP_POST_NEG'.
* src/ltlparse/ltlscan.ll: Introduce the not_prop start condition,
to restrict the set of atomic propositions allowed in places
where they are not expected.  Make `true' and `false' case insensitive.
* src/ltltest/parse.test, src/ltltest/tostring.test: More cases.
* src/ltlvisit/tostring.cc (to_string_visitor): Quote atomic
propositions equal to "true" or "false".

* src/sanity/Makefile.am (check-local): Run it.
* src/ltlvisit/nenoform.cc, src/ltlvisit/tostring.cc,
src/tgba/bdddict.cc, src/tgba/bddprint.cc, src/tgba/tgba.cc,
src/tgba/tgbaproduct.cc, src/tgbaalgos/lbtt.cc,
src/tgbaalgos/magic.cc, src/tgbaalgos/powerset.cc,
src/tgbaalgos/reachiter.cc, src/tgbaalgos/gtec/ce.cc,
src/tgbaalgos/gtec/gtec.cc, src/tgbatest/ltl2tgba.cc: Fix style
issues reported by style.test.

src/ltlvisit/formlength.cc, src/ltlvisit/reducform.cc,
src/ltlvisit/reducform.hh: Fix copyright year, these files were
created in 2004.

* src/sanity/Makefile.am (check-local): Run it.
* src/ltltest/equals.test, src/ltltest/lunabbrev.test,
src/ltltest/nenoform.test, src/ltltest/parseerr.test
src/ltltest/tunabbrev.test, src/ltlvisit/forminf.cc,
src/tgbatest/explpro2.test, src/tgbatest/explpro3.test,
src/tgbatest/explprod.test, src/tgbatest/spotlbtt.test,
src/tgbatest/tripprod.test: Wrap long lines.

* src/ltltest/inf.test: Test some case of implies.
* src/ltltest/inf.cc: Test some case of implies.
* src/ltltest/reduc.test: Test reduction of a file of formula.
* src/ltltest/reduc.cc: Test reduction of a formula.

* src/ltlvisit/formlength.cc: Gives the lenght of a formula.
* src/ltlvisit/forminf.cc: To know if a formula implies an other.
* src/ltlvisit/basereduc.cc: Implement only basic reduction.
* src/ltlvisit/reducform.cc: Implement reduction.
* src/ltlvisit/reducform.hh: To reduce a formula.

fair_loop_approximation when branching postponement is not used.

branching postponement.
* src/tgbaalgos/ltl2tgba_fm.cc (formula_canonizer): New class, with
bits extracted from fill_dests and ltl_to_tgba_fm.
(fill_dests, ltl_to_tgba_fm): Adjust to use formula_canonizer.

fair_loop_approx.
* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Implement the
fair_loop_approx optimization.
(ltl_promise_visitor, ltl_possible_fair_loop_visitor,
possible_fair_loop_checker): New classes.
* src/tgbatest/ltl2tgba.cc: Add the -L option.
* src/tgbatest/spotlbtt.test: Exercise fair_loop_approx.
* wrap/python/cgi/ltl2tgba.in: Make it an option.

branching_postponement.
* src/tgbaalgos/ltl2tgba_fm.cc (fill_dests): New function, extracted
from ltl_to_tgba_fm().
(ltl_to_tgba_fm): Implement the branching_postponement optimization.
* src/tgbatest/ltl2tgba.cc: Add the -p option.
* src/tgbatest/spotlbtt.test: Exercise branching postponement.
* wrap/python/cgi/ltl2tgba.in: Make it an option.

some GCC version.  Report from Denis Poitrenaud.

free all formulae entered into canonical_succ, to avoid errors
when a formula is entered into canonical_succ but not into
formulae_seen.
* src/tgbatest/ltl2tgba.test: Add a new test, and check with -f.
Report from Thomas Martinez.

* HACKING: Update tools requirements.
* src/sanity/Makefile.am (EXTRA_DIST): Distribute includes.test.

* src/Makefile.am (SUBDIRS): Add sanity.
* configure.ac: Output src/sanity/Makefile.in.

(noinst_PROGRAMS): ... here.
* iface/gspn/Makefile.am (check_PROGRAMS): Rename as ...
(noinst_PROGRAMS): ... this.

Report from Denis Poitrenaud.

when show_never_claim.  Change the title to LTL-to-TGBA.

version a separate variable.

never_claim_reachable, and cgi.escape its output.
Lighten the color a bit.

src/tgba/bddprint.hh: Fix Doxygen comments.

arguments.
* src/tgbaalgos/neverclaim.cc (never_claim_bfs::state_is_accepting):
New method.
(never_claim_bfs::get_state_label, never_claim_bfs::process_state):
Use it.

the new variable dot_bgcolor.

using this new function.

* wrap/python/cgi/ltl2tgba.in: Display the never claim on demand.