GTA (Generalized Testing Automata) implementation

* 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/taalgos/Makefile.am, src/taalgos/dotty.cc,
src/taalgos/emptinessta.cc, src/taalgos/minimize.cc,
src/taalgos/minimize.hh, src/taalgos/tgba2ta.cc, src/taalgos/tgba2ta.hh,
src/tgbatest/ltl2tgba.cc: changes introduced to add a new form of TA
called GTA (Generalized Testing Automata). GTA is a TA with acceptance-
conditions added on transitions.

src/taalgos/tgba2ta.hh

@@ -0,0 +1,51 @@
+// Copyright (C) 2010 Laboratoire de Recherche et Developpement
+// de l Epita (LRDE).
+//
+// This file is part of Spot, a model checking library.
+//
+// Spot is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// Spot is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+// License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Spot; see the file COPYING.  If not, write to the Free
+// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+
+#ifndef SPOT_TGBAALGOS_SBA2TA_HH
+# define SPOT_TGBAALGOS_SBA2TA_HH
+
+#include "misc/hash.hh"
+#include <list>
+#include <map>
+#include <set>
+#include "tgba/tgbatba.hh"
+#include "ltlast/formula.hh"
+#include <cassert>
+#include "misc/bddlt.hh"
+#include "ta/taexplicit.hh"
+
+namespace spot
+{
+  ta*
+  tgba_to_ta(const tgba* tgba_to_convert, bdd atomic_propositions_set,
+      bool artificial_initial_state_mode = true,
+      bool artificial_livelock_accepting_state_mode = false,
+      bool degeneralized = true);
+
+  void
+  compute_livelock_acceptance_states(ta_explicit* testing_automata);
+
+  void
+  add_artificial_livelock_accepting_state(ta_explicit* testing_automata,
+      state_ta_explicit* artificial_livelock_accepting_state);
+
+}
+
+#endif // SPOT_TGBAALGOS_SBA2TA_HH