Merge the core and python tests in the tests/ directory

* tests/: Rename as...
* tests/core/: ... this.
* python/tests/: Rename as...
* tests/python/: ... this.
* python/tests/run.in: Move as...
* tests/run.in: This, and adjust.
* tests/Makefile.am: Adjust to run both core and python tests.
* configure.ac, README, debian/python3-spot.examples, debian/rules,
doc/org/tut.org, python/Makefile.am, spot/ltsmin/Makefile.am,
spot/ltsmin/kripke.test, spot/sanity/ipynb.test: Adjust.

tests/python/ltl2tgba.py

@@ -0,0 +1,132 @@
+# -*- mode: python; coding: utf-8 -*-
+# Copyright (C) 2009, 2010, 2012, 2014, 2015 Laboratoire de Recherche et
+# Développement de l'Epita (LRDE).
+# Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
+# département Systèmes Répartis Coopératifs (SRC), Université Pierre
+# et Marie Curie.
+#
+# 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/>.
+
+# This is a python implementation of a small ltl2tgba translator that calls the
+# translation and simplifications functions itself.  It's better to use the
+# translate() function today.
+
+import sys
+import getopt
+import spot
+
+def usage(prog):
+    sys.stderr.write("""Usage: %s [OPTIONS...] formula
+
+Options:
+  -d   turn on traces during parsing
+  -D   degeneralize the automaton
+  -f   use Couvreur's FM algorithm for translation
+  -t   display reachable states in LBTT's format
+  -T   use ltl2taa for translation
+  -v   display the BDD variables used by the automaton
+  -W   minimize obligation properties
+""" % prog)
+    sys.exit(2)
+
+
+prog = sys.argv[0]
+try:
+    opts, args = getopt.getopt(sys.argv[1:], 'dDftTvW')
+except getopt.GetoptError:
+    usage(prog)
+
+exit_code = 0
+debug_opt = False
+degeneralize_opt = None
+output = 0
+fm_opt = 0
+taa_opt = 0
+wdba = 0
+
+for o, a in opts:
+    if o == '-d':
+        debug_opt = True
+    elif o == '-D':
+        degeneralize_opt = 1
+    elif o == '-f':
+        fm_opt = 1
+    elif o == '-t':
+        output = 6
+    elif o == '-T':
+        taa_opt = 1
+    elif o == '-v':
+        output = 5
+    elif o == '-W':
+        wdba = 1
+    else:
+        usage(prog)
+
+if len(args) != 1:
+    usage(prog)
+
+
+cout = spot.get_cout()
+cerr = spot.get_cerr()
+
+e = spot.default_environment.instance()
+p = spot.empty_parse_error_list()
+
+f = spot.parse_infix_psl(args[0], p, e, debug_opt)
+if spot.format_parse_errors(cerr, args[0], p):
+    exit_code = 1
+
+dict = spot.make_bdd_dict()
+
+if f:
+    if fm_opt:
+        a = spot.ltl_to_tgba_fm(f, dict)
+        concrete = 0
+    elif taa_opt:
+        a = concrete = spot.ltl_to_taa(f, dict)
+    else:
+        assert "unspecified translator"
+
+    if wdba:
+        a = spot.ensure_digraph(a)
+        a = spot.minimize_obligation(a, f)
+
+    del f
+
+    degeneralized = None
+    if degeneralize_opt:
+        a = degeneralized = spot.degeneralize(a)
+
+    if output == 0:
+        spot.print_dot(cout, a)
+    elif output == 5:
+        a.get_dict().dump(cout)
+    elif output == 6:
+        spot.print_lbtt(cout, a)
+    else:
+        assert "unknown output option"
+
+    if degeneralize_opt:
+        del degeneralized
+    # Must delete absolutely all references to an automaton
+    # so that the C++ destructor gets called.
+    del a, concrete
+
+else:
+    exit_code = 1
+
+del dict
+assert spot.fnode_instances_check()