complete: Fix completion of automata using Fin-acceptance

* src/tgba/acc.cc, src/tgba/acc.hh: Add a way to extract
an unstatisfiable mark, and fix the eval() function for
Fin acceptance.
* src/tgbaalgos/complete.cc: Label the sink state using
an unsatisfiable mark.  Do not assume generalized Büchi.
* src/tgbatest/complete.test: New test.
* src/tgbatest/Makefile.am: Add it.

src/tgbatest/Makefile.am

@@ -72,6 +72,7 @@ TESTS = \
   det.test \
   neverclaimread.test \
   hoaparse.test \
+  complete.test \
   remfin.test \
   dstar.test \
   readsave.test \

src/tgbatest/complete.test

@@ -0,0 +1,117 @@
+#! /bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2015 Laboratoire de Recherche et Développement 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 3 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+. ./defs || exit 1
+
+set -e
+
+cat >automaton <<EOF
+HOA: v1
+States: 2
+Start: 0
+AP: 1 "a"
+Acceptance: 1 Fin(0)
+--BODY--
+State: 0
+[0] 1
+State: 1
+[0] 1
+--END--
+HOA: v1
+States: 2
+Start: 0
+AP: 1 "a"
+Acceptance: 2 t
+--BODY--
+State: 0
+[0] 1
+State: 1
+[0] 1
+--END--
+HOA: v1
+States: 2
+Start: 0
+AP: 1 "a"
+Acceptance: 0 f
+--BODY--
+State: 0
+[0] 1
+State: 1
+[0] 1
+--END--
+EOF
+
+cat >expected <<EOF
+HOA: v1
+States: 3
+Start: 0
+AP: 1 "a"
+Acceptance: 1 Fin(0)
+properties: trans-labels explicit-labels state-acc complete
+properties: deterministic
+--BODY--
+State: 0
+[0] 1
+[!0] 2
+State: 1
+[0] 1
+[!0] 2
+State: 2 {0}
+[t] 2
+--END--
+HOA: v1
+States: 3
+Start: 0
+AP: 1 "a"
+acc-name: Buchi
+Acceptance: 1 Inf(0)
+properties: trans-labels explicit-labels state-acc complete
+properties: deterministic
+--BODY--
+State: 0 {0}
+[0] 1
+[!0] 2
+State: 1 {0}
+[0] 1
+[!0] 2
+State: 2
+[t] 2
+--END--
+HOA: v1
+States: 2
+Start: 0
+AP: 1 "a"
+Acceptance: 0 f
+properties: trans-labels explicit-labels state-acc complete
+properties: deterministic
+--BODY--
+State: 0
+[0] 1
+[!0] 1
+State: 1
+[0] 1
+[!0] 1
+--END--
+EOF
+
+run 0 ../../bin/autfilt -CH automaton >out
+cat out
+diff out expected