bin/ltl2tgba: New user binary.

* src/tgbaalgos/postproc.cc, src/tgbaalgos/postproc.hh: New class to
capture the postprocessing logic.
* src/tgbaalgos/Makefile.am: Add them.
* src/bin/ltl2tgba.cc, src/bin/man/ltl2tgba.x: New files.
* src/bin/Makefile.am, src/bin/man/Makefile.am: Add them.
* src/tgbatest/spotlbtt.test: Prune the list of configurations slightly.
* src/tgbatest/spotlbtt2.test: New file.
* src/tgbatest/Makefile.am: Add it.
* bench/ltl2tgba/algorithms, bench/ltl2tgba/defs.in: Adjust to
use the new binary.
* NEWS: Update.

src/tgbatest/spotlbtt2.test

@@ -0,0 +1,81 @@
+#!/bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2012 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 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.
+
+
+. ./defs
+
+set -e
+
+rm -f config
+for type in tgba ba; do
+  for pref in any deterministic small; do
+    for level in low medium high; do
+       cat >>config <<EOF
+Algorithm
+{
+   Name = "$type $pref $level"
+   Path = "${LBTT_TRANSLATE}"
+   Parameters = "--spot '../../bin/ltl2tgba --$type --$pref --$level --lbtt -F'"
+   Enabled = yes
+}
+EOF
+    done
+  done
+done
+
+cat >>config <<EOF
+GlobalOptions
+{
+   Rounds = 100
+   Interactive = Never
+#   Verbosity = 5
+#   ComparisonCheck = no
+#   ConsistencyCheck = no
+#   IntersectionCheck = no
+}
+
+FormulaOptions
+{
+  Size = 5...20
+  Propositions = 6
+
+  AbbreviatedOperators = Yes
+  GenerateMode = Normal
+  OutputMode = Normal
+  PropositionPriority = 50
+
+  TruePriority = 1
+  FalsePriority = 1
+
+  AndPriority = 10
+  OrPriority = 10
+  XorPriority = 0
+  # EquivalencePriority = 0
+
+  BeforePriority = 0
+
+  DefaultOperatorPriority = 5
+}
+EOF
+
+${LBTT}
+rm config