Disallow copy for security.

* src/tgba/tgbabddconcrete.hh (tgba_bdd_concrete): Disallow copy.
* src/tgba/tgbaexplicit.hh (tgba_explicit): Likewise.
* src/tgba/tgbaexplicit.cc (tgba_explicit::operator=,
tgba_explicit::tgba_explicit(tgba_explicit)): Remove.
* src/tgba/tgbabddconcreteproduct.cc
(tgba_bdd_concrete_product_factory::tgba_bdd_concrete_product_factory,
product): Take operand automata as pointers.
* src/tgba/tgbabddconcreteproduct.hh (product): Likewise.
* src/tgba/tgbaproduct.cc, src/tgba/tgbaproduct.hh:
(tgba_product): Disallow copy.
(tgba_product::tgba_product): Take operand automata as pointers.
* src/tgbaalgos/dotty.cc (dotty_state, dotty_rec, dotty_reachable):
Take tgba arguments as pointer.
* src/tgbaalgos/dotty.hh (dotty_reachable): Likewise.
* src/tgbaalgos/lbtt.cc (fill_todo, lbtt_reachable): Likewise.
* src/tgbaalgos/lbtt.hh (lbtt_reachable): Likewise.
* src/tgbaalgos/ltl2tgba.cc, src/tgbaalgos/ltl2tgba.hh (ltl_to_tgba):
Likewise.
* src/tgbaalgos/save.cc (save_rec, tgba_save_reachable): Likewise.
* src/tgbaalgos/save.hh (save): Likewise.
* src/tgbatest/explicit.cc, src/tgbatest/explprod.cc,
src/tgbatest/ltl2tgba.cc, src/tgbatest/ltlprod.cc,
src/tgbatest/mixprod.cc, src/tgbatest/readsave.cc,
src/tgbatest/spotlbtt.cc, src/tgbatest/tgbaread.cc,
src/tgbatest/tripprod.cc: Likewise.

dictionaries (map of BDD variables to LTL formulae).  This was
cumbersome, because to multiply two automata we had to build a
common dictionary (the union of the two LTL formula spaces), and
install wrappers to translate each automaton's BDD answers into
the common dictionary.  This translation, that had to be repeated
when several products were nested, was time consuming and was a
hindrance for some optimizations.
In the new scheme, all automata involved in a product must
share the same dictionary.  An empty dictionary should be
constructed by the user and passed to the automaton' constructors
as necessary.
This huge change removes most code than it adds.

* src/Makefile.am (libspot_la_LIBADD): Add misc/libmisc.la.
* src/misc/bddalloc.hh, src/misc/bddalloc.cc: New files.  These
partly replace src/tgba/bddfactory.hh and src/tgba/bddfactory.cc.
* src/misc/Makefile.am: Adjust to build bddalloc.hh and bddalloc.cc.
* src/tgba/bddfactory.hh, src/tgba/bddfactory.cc,
src/tgba/dictunion.hh, src/tgba/dictunion.cc,
src/tgba/tgbabdddict.hh, src/tgba/tgbabdddict.cc,
src/tgba/tgbabddtranslatefactory.hh,
src/tgba/tgbabddtranslatefactory.cc,
src/tgba/tgbatranslateproxy.hh, src/tgba/tgbatranslateproxy.cc:
Delete.
* src/tgba/bdddict.hh, src/tgba/bdddict.cc: New files.  These
replaces tgbabdddict.hh and tgbabdddict.cc, and also part of
bddfactory.hh and bddfactory.cc.
* src/tgba/bddprint.cc, src/tgba/bddprint.hh: Adjust to
use bdd_dict* instead of tgba_bdd_dict&.
* src/tgba/succiterconcrete.cc (succ_iter_concrete::next()):
Get next_to_now from the dictionary.
* src/tgba/tgba.hh (tgba::get_dict): Return a bdd_dict*,
not a const tgba_bdd_dict*.
* src/tgba/tgbabddconcrete.cc, src/tgba/tgbabddconcrete.hh:
Adjust to use the new dictionary, stored in data_.
* src/tgba/tgbabddconcretefactory.cc,
src/tgba/tgbabddconcretefactory.hh: Likewise.  Plus
now_to_next_ is now also stored in the dictionary.
* src/tgba/tgbabddconcreteproduct.cc: Likewise.  Now
that both operand share the same product, there is not
point in using tgba_bdd_translate_factory.
* src/tgba/tgbabddcoredata.cc, src/tgba/tgbabddcoredata.hh:
Store a bdd_dict (taken as constructor argument).
(tgba_bdd_core_data::~tgba_bdd_core_data): Remove.
(tgba_bdd_core_data::translate): Remove.
(tgba_bdd_core_data::next_to_now): Remove (now in dict).
(tgba_bdd_core_data::dict): New pointer.
* src/tgba/tgbabddfactory.hh: (tgba_bdd_factory::get_dict): Remove.
* src/tgba/tgbaexplicit.cc, src/tgba/tgbaexplicit.hh:
Adjust to use the new dictionary.
* src/tgba/tgbaproduct.cc, src/tgba/tgbaproduct.hh: Likewise.  Do
not use tgba_bdd_dict_union and tgba_bdd_translate_proxy anymore.
* src/tgbaalgos/lbtt.cc, src/tgbaalgos/save.cc: Adjust to
use bdd_dict* instead of tgba_bdd_dict&.
* src/tgbaalgos/ltl2tgba.cc, src/tgbaalgos/ltl2tgba.cc: Likewise.
(ltl_to_tgba): Take a dict argument.
* src/tgbaparse/public.hh (tgba_parse): Take a dict argument.
* src/tgbaparse/tgbaparse.yy (tgba_parse): Take a dict argument.
* src/tgbatest/explicit.cc, src/tgbatest/explprod.cc,
src/tgbatest/ltlprod.cc, src/tgbatest/mixprod.cc,
src/tgbatest/readsave.cc, src/tgbatest/spotlbtt.cc,
src/tgbatest/tgbaread.cc, src/tgbatest/tripprod.cc: Instantiate
a dictionary, and pass it to the automata' constructors.
* src/tgbatest/ltl2tgba.cc: Likewise, and remove the -o (defrag)
option.
* iface/gspn/gspn.hh (tgba_gspn::tgba_gspn): Take a bdd_dict argument.
(tgba_gspn::get_dict): Adjust return type.
* iface/gspn/gspn.cc: Do not use bdd_factory, adjust to
use the new dictionary instead.

* NEWS, README: New files.

versions are stricter on this.

Forward root_ to children of And.
(ltl_trad_visitor::recurse): Take a root argument.

(tgba_bdd_concrete_factory::add_relation): Rename as ...
(tgba_bdd_concrete_factory::constrain_relation): ... this.
* src/tgba/tgbabddconcretefactory.cc, src/tgbaalgos/ltl2tgba.cc:
Adjust.

not create Now/Next variable when G is the root of the formula.
(ltl_trad_visitor::ltl_trad_visitor): Take a root argument.
(ltl_trad_visitor::recurse): Create a new visitor, do not copy
the current one.
(ltl_to_tgba): Build ltl_trad_visitor with root = true.

* src/tgbaalgos/ltl2tgba.cc (ltl_trad_visitor::visit(unop::X)):
Remove FIXME about handling X(a U b) and X(a R b) better, it's
done naturally.

Fix so that !p.!Acc[g].Acc[f] + p.!Acc[g].Acc[f] + p.Acc[g].!Acc[f]
is factored as !p.!Acc[g].Acc[f] + p.(!Acc[g].Acc[f] + Acc[g].!Acc[f]),
not !Acc[g].Acc[f] + p.Acc[g].!Acc[f].

* src/SpotWrapper.hh (SpotWrapper::SPOT_XOR): Declare.
* src/SpotWrapper.cc (SpotWrapper::SPOT_XOR): Define.
(SpotWrapper::translateFormula): Use SPOT_XOR.

* Makefile.am (MAYBE_LBTT): New variables.
(SUBDIRS): Add $(MAYBE_LBTT).
(EXTRA_DIST): Add m4/lbtt.m4.
* configure.ac: Call AX_CHECK_LBTT.
* m4/lbtt.m4: New file.
* src/tgbatest/Makefile.am (check_PROGRAMS): Add spotlbtt.
(spotlbtt_SOURCES): New variables.
(TESTS): Add spotlbtt.test.
(CLEANFILE): Add config.
* src/tgbatest/defs.in (top_builddir, LBTT, LBTT_TRANSLATE): New
substitutions.
* src/tgbatest/spotlbtt.cc, src/tgbatest/spotlbtt.test: New files.

* src/main.cc (testLoop): Return 1 iff an error occured.
(main): Use testLoop's output as exit status.

Declare class SpotWrapper as a friend.
* src/SpotWrapper.h, src/SpotWrapper.cc: New files.
* src/Makefile.am (lbtt_translate_SOURCES): Add SpotWrapper.cc
and SpotWrapper.h.
* src/translate.cc (main): Add the --spot option, and build
a SpotWrapper of required.

Fix computation of states sharing the same accepting set.

Fix computation of states sharing the same accepting state.

* src/tgbaalgos/lbtt.cc (fill_todo): Add the 'first' argument
to designate initial states.
(lbtt_reachable): Adjust calls to fill_todo.  Handle the
fake initial state accepting conditions specially.
* src/tgbaalgos/lbtt.hh: Update comments.

guards with -1 in output.

* src/tgbaalgos/lbtt.cc, src/tgbaalgos/lbtt.hh: New files.
* src/tgbaalgos/Makefile.am (tgbaalgos_HEADERS): Add lbtt.hh.
(libtgbaalgos_la_SOURCES): Add lbtt.cc.
* src/tgba/bddprint.cc (print_sat_handler): Put a space after "!".
* src/tgbatest/readsave.test: Adjust spaces after "!".

* iface/gspn/gspn.cc, iface/gspn/gspn.hh: New files.
* iface/gspn/Makefile.am (libspotgspn_la_SOURCES): Add them.

current_accepting_conditions): Mark as const.
* src/tgba/succiterconcrete.cc, src/tgba/succiterconcrete.hh,
src/tgba/tgbaexplicit.cc, src/tgba/tgbaexplicit.hh,
src/tgba/tgbaproduct.cc, src/tgba/tgbaproduct.hh,
src/tgba/tgbatranslateproxy.cc, src/tgba/tgbatranslateproxy.hh:
Likewise.

[__cplusplus]: Wrap everything under extern "C".

(tgba_succ_iterator_concrete::current_acc_): New attribute.
* src/tgba/succiterconcrete.cc
(tgba_succ_iterator_concrete::next): Set current_acc_.
(tgba_succ_iterator_concrete::current_accepting_conditions):
Simply return it.

* iface/Makefile.am, iface/gspn/Makefile.am: New files.
* Makefile.am (SUBDIRS): Add iface.
* iface/gspn/gspnlib.h: New file, from Yann and Souheib.

tgba_bdd_core_data::translate): Handle all_accepting_conditions.
* src/tgba/tgbabddconcretefactory.cc
(tgba_bdd_concrete_factory::finish): Fill all_accepting_conditions.

* src/Alloc.h (__INT_TO_PTR): Redefine to work around glibc 2.3.
* doc/texinfo.tex: New upstream version.

accepting conditions w.r.t. to Now variables, not Next.

Simplify, do not call next_non_false_() either side is done.

State that this is a boolean function.
* src/tgba/succiterconcrete.hh
(tgba_succ_iterator_concrete::trans_dest_,
tgba_succ_iterator_concrete::trans_set_,
tgba_succ_iterator_concrete::trans_set_left_,
tgba_succ_iterator_concrete::neg_trans_set_): Remove.
* src/tgba/succiterconcrete.cc
(tgba_succ_iterator_concrete::tgba_succ_iterator_concrete,
tgba_succ_iterator_concrete::first): Adjust to removed members.
(tgba_succ_iterator_concrete::next): Simplify, transitions
are no labelled by boolean functions, not only conjunctions.
Suggested by Denis Poitrenaud.

function.
* src/tgba/tgbabddcoredata.cc (tgba_bdd_core_data::translate):
Likewise.
* src/tgba/tgbabddtranslatefactory.cc
(tgba_bdd_translate_factory::tgba_bdd_translate_factory): Use
tgba_bdd_core_data::translate.

New attribute.
* tgba/tgbabddcoredata.cc, tgba/tgbabddtranslatefactory.cc:
Handle nownext_set.
* src/tgba/succiterconcrete.cc
(tgba_succ_iterator_concrete::next): Use nownext_set to simplify.