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/ltl2dstar.test

@@ -0,0 +1,97 @@
+#!/bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2013, 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/>.
+
+# Do some quick translations to make sure the neverclaims produced by
+# spot actually look correct!  We do that by parsing them via ltlcross.
+# ltl2neverclaim-lbtt.test does the same with LBTT if it is installed.
+
+. ./defs
+set -e
+
+# Skip this test if ltl2dstar is not installed.
+(ltl2dstar --version) || exit 77
+
+ltlfilt=ltlfilt
+ltl2tgba=ltl2tgba
+ltlcross=ltlcross
+randltl=randltl
+ltlfilt=ltlfilt
+dstar2tgba=dstar2tgba
+
+$ltlfilt -f 'a U b' -l |
+ltl2dstar --ltl2nba=spin:$ltl2tgba@-s - - |
+$dstar2tgba --stats '%s %e %t %a %d' |
+tee out
+
+test "`cat out`" = '2 3 7 1 1'
+
+RAB=--automata=rabin
+STR=--automata=streett
+
+$randltl -n 15 a b | $ltlfilt --nnf --remove-wm |
+$ltlcross -F - -f 'GFa & GFb & GFc' -f '(GFa -> GFb) & (GFc -> GFd)' \
+--timeout=30 \
+"$ltl2tgba -s %f >%N" \
+"ltl2dstar $RAB --output=nba --ltl2nba=spin:$ltl2tgba@-s %L %T" \
+"ltl2dstar $RAB --ltl2nba=spin:$ltl2tgba@-s %L %D" \
+"ltl2dstar $RAB --ltl2nba=spin:$ltl2tgba@-s %L - | $dstar2tgba --low -s >%N" \
+"ltl2dstar $STR --output=nba --ltl2nba=spin:$ltl2tgba@-s %L %T" \
+"ltl2dstar $STR --ltl2nba=spin:$ltl2tgba@-s %L %D" \
+"ltl2dstar $STR --ltl2nba=spin:$ltl2tgba@-s %L - | $dstar2tgba --low -s >%N" \
+--csv=out.csv
+
+# A bug in ltlcross <=1.2.5 caused it to not use the complement of the
+# negative automaton.
+$ltlcross -f 'GFa' --verbose \
+"ltl2dstar $RAB --ltl2nba=spin:$ltl2tgba@-s %L %D" \
+"ltl2dstar $STR --ltl2nba=spin:$ltl2tgba@-s %L %D" 2>err
+test `grep -c 'info: check_empty.*Comp' err` = 2
+$ltlcross -f 'FGa' --verbose \
+"ltl2dstar $RAB --ltl2nba=spin:$ltl2tgba@-s %L %D" \
+"ltl2dstar $STR --ltl2nba=spin:$ltl2tgba@-s %L %D" 2>err
+test `grep -c 'info: check_empty.*Comp' err` = 2
+
+
+# Make sure ltldo preserve the Rabin acceptance by default
+ltldo \
+    "ltl2dstar --ltl2nba=spin:$ltl2tgba@-s --output-format=hoa %L %O" \
+    -f 'GFa -> GFb' -Hi > out.hoa
+cat >expected <<EOF
+HOA: v1
+States: 5
+Start: 3
+AP: 2 "a" "b"
+acc-name: Rabin 2
+Acceptance: 4 (Fin(0) & Inf(1)) | (Fin(2) & Inf(3))
+properties: implicit-labels state-acc complete deterministic
+--BODY--
+State: 0 {1 3}
+2 4 0 1
+State: 1 {0 3}
+2 4 0 1
+State: 2 {1}
+2 4 0 1
+State: 3 {0}
+0 1 0 1
+State: 4 {0}
+2 4 0 1
+--END--
+EOF
+diff out.hoa expected