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/relabel.py

@@ -0,0 +1,32 @@
+# -*- mode: python; coding: utf-8 -*-
+# Copyright (C) 2015  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 spot
+
+f = spot.formula('GF(a & b) -> (FG(a & b) & Gc)')
+m = spot.relabeling_map()
+g = spot.relabel_bse(f, spot.Pnn, m)
+res = ""
+for old, new in m.items():
+    res += "#define {} {}\n".format(old, new)
+res += str(g)
+print(res)
+assert(res == """#define p0 a & b
+#define p1 c
+GFp0 -> (FGp0 & Gp1)""")