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/parse.test

@@ -1,106 +0,0 @@
-#! /bin/sh
-# -*- coding: utf-8 -*-
-# Copyright (C) 2009, 2010, 2011, 2012, 2013 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/>.
-
-
-# Check that spot::parse succeed on valid input, and that
-# dump and dotty will work with the resulting trees.  Note that
-# this doesn't check that the tree is correct w.r.t. the formula.
-
-. ./defs || exit 1
-
-for f in \
-  '0' \
-  '1' \
-  'true' \
-  'false' \
-  'a' \
-  'p11011' \
-  '(p11011)' \
-  'a & b' \
-  'a * _b12' \
-  'a && .b.' \
-  'a + b' \
-  'a3214 | b' \
-  'a /\ b' \
-  'a || b' \
-  'a \/ b' \
-  'a | b' \
-  '_a_ U b' \
-  'a R b' \
-  'a <=> b' \
-  'a <-> b' \
-  'a ^ b' \
-  'a xor b' \
-  'a => b' \
-  'a -> b' \
-  'F b' \
-  'Gb' \
-  'G(b)' \
-  '!G(!b)' \
-  '!b' \
-  '[]b' \
-  '<>b' \
-  'X b' \
-  '()b' \
-  'X"X"' \
-  'X"F"' \
-  'X"G"' \
-  'X"U"' \
-  'X"W"' \
-  'X"R"' \
-  'X"M"' \
-  'long_atomic_proposition_1 U long_atomic_proposition_2' \
-  '  ab & ac | ad ^ af' \
-  '((b & a) + a) & d' \
-  '(ab & ac | ad ) <=> af ' \
-  'a U b U c U d U e U f U g U h U i U j U k U l U m' \
-  '(ab & !Xad + ad U ab) & FG p12 /\ GF p13' \
-  '((([]<>()p12))   )' \
-  'a R ome V anille' \
-  'p=0Uq=1' \
-  '((p=1Rq=1)+p=0)UXq=0' \
-  '((p=1Rq=1)*p=0)UXq=0' \
-  '(Gq=1*Fp=0)UXq=0' \
-  '((p=1Mq=1)Wx+p=0)RXq=0' \
-  '((p=1Vq=1)Rx+p=0)WXq=0' \
-  '((X(p2=0))U(X(p2=0)))+((Xp1=0)UFALSE)'
-
-do
-  if ../ltl2text "$f"; then
-    :
-  else
-    echo "ltl2text failed to parse '$f'"
-    exit 1
-  fi
-
-  if test -n "$DOT"; then
-    run 0 ../ltl2dot "$f" > parse.dot
-    if $DOT -o /dev/null parse.dot; then
-      rm -f parse.dot
-    else
-      rm -f parse.dot
-      echo "dot failed to parse ltl2dot output for '$f'"
-      exit 1
-    fi
-  fi
-done