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/core/stutter-tgba.test

@@ -0,0 +1,87 @@
+#! /bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2014, 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
+
+ltl2tgba=ltl2tgba
+autfilt=autfilt
+
+$ltl2tgba '!FG(a | Xa | G!a)' -H | $autfilt -H --destut > pos.hoa
+$ltl2tgba 'FG(a | Xa | G!a)' -H | $autfilt -H --destut > neg.hoa
+$autfilt pos.hoa --product neg.hoa -H > prod.hoa
+$autfilt --is-empty prod.hoa -q && exit 1
+$autfilt --states=10 prod.hoa -q
+
+$ltl2tgba '!FG(a | Xa | G!a)' -H | $autfilt -H --instut > pos.hoa
+$ltl2tgba 'FG(a | Xa | G!a)' -H | $autfilt -H --instut > neg.hoa
+$autfilt pos.hoa --product neg.hoa -H > prod.hoa
+$autfilt --is-empty prod.hoa -q && exit 1
+$autfilt --states=12 prod.hoa -q
+
+
+# Check for issue #7.
+#
+# We just run those without checking the output, it is enough to
+# trigger assertions in the HOA output routines.
+run 0 $ltl2tgba -H 'X(a U b)' > det.hoa
+run 0 $autfilt --destut det.hoa -H
+run 0 $autfilt --instut=1 det.hoa -H
+run 0 $autfilt --instut=2 det.hoa -H
+
+$ltl2tgba -H 'a & Fb' | $autfilt --destut -H > output
+
+cat >expected <<EOF
+HOA: v1
+name: "a & Fb"
+States: 3
+Start: 2
+AP: 2 "a" "b"
+acc-name: Buchi
+Acceptance: 1 Inf(0)
+properties: trans-labels explicit-labels trans-acc deterministic
+--BODY--
+State: 0
+[t] 0 {0}
+State: 1
+[1] 0 {0}
+[!1] 1
+State: 2
+[0&1] 0 {0}
+[0&!1] 1
+--END--
+EOF
+
+diff output expected
+
+run 0 $ltl2tgba -H 'F(a & X(!a & b))' > input
+grep stutter-invariant input && exit 1
+run 0 $ltl2tgba --check=stutter 'F(a & X(!a & b))' > input.2
+grep stutter-invariant input.2
+run 0 $autfilt --check=stutter input > input.2
+grep stutter-invariant input.2
+
+run 0 $ltl2tgba -H 'F(a & X(a & b))' > input
+grep stutter-invariant input && exit 1
+run 0 $ltl2tgba --check=stutter 'F(a & X(a & b))' > input.2
+grep stutter-sensitive input.2
+run 0 $autfilt --check=stutter input > input.2
+grep stutter-sensitive input.2