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/setxor.py

@@ -0,0 +1,49 @@
+# -*- mode: python; coding: utf-8 -*-
+# Copyright (C) 2010, 2011 Laboratoire de Recherche et Développement
+# de l'EPITA.
+#
+# 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/>.
+
+import sys
+from buddy import *
+
+bdd_init(10000, 10000)
+bdd_setvarnum(5)
+
+V = [bdd_ithvar(i) for i in range(5)]
+
+a =  V[0] & -V[1] &  V[2] & -V[3]
+b =  V[0] &  V[1] &  V[2] & -V[3]
+c = -V[0] &  V[1] & -V[2] & -V[3]
+
+assert(c == bdd_setxor(a,b))
+assert(c == bdd_setxor(b,a))
+assert(a == bdd_setxor(b,c))
+assert(a == bdd_setxor(c,b))
+assert(b == bdd_setxor(a,c))
+assert(b == bdd_setxor(c,a))
+
+d =          V[1] &  V[2] & -V[3] & V[4]
+e =  V[0] &  V[1] & -V[2] & -V[3] & V[4]
+
+assert(e == bdd_setxor(a,d))
+assert(e == bdd_setxor(d,a))
+
+# Cleanup all BDD variables before calling bdd_done(), otherwise
+# bdd_delref will be called after bdd_done() and this is unsafe in
+# optimized builds.
+V = a = b = c = d = e = 0;
+bdd_done()