rename src/ as spot/ and use include <spot/...>

* NEWS: Mention the change.
* src/: Rename as ...
* spot/: ... this, adjust all headers to include <spot/...> instead of
"...", and adjust all Makefile.am to search headers from the top-level
directory.
* HACKING: Add conventions about #include.
* spot/sanity/style.test: Add a few more grep to catch cases
that do not follow these conventions.
* .gitignore, Makefile.am, README, bench/stutter/Makefile.am,
bench/stutter/stutter_invariance_formulas.cc,
bench/stutter/stutter_invariance_randomgraph.cc, configure.ac,
debian/rules, doc/Doxyfile.in, doc/Makefile.am,
doc/org/.dir-locals.el.in, doc/org/g++wrap.in, doc/org/init.el.in,
doc/org/tut01.org, doc/org/tut02.org, doc/org/tut03.org,
doc/org/tut10.org, doc/org/tut20.org, doc/org/tut21.org,
doc/org/tut22.org, doc/org/tut30.org, iface/ltsmin/Makefile.am,
iface/ltsmin/kripke.test, iface/ltsmin/ltsmin.cc,
iface/ltsmin/ltsmin.hh, iface/ltsmin/modelcheck.cc,
wrap/python/Makefile.am, wrap/python/ajax/spotcgi.in,
wrap/python/spot_impl.i, wrap/python/tests/ltl2tgba.py,
wrap/python/tests/randgen.py, wrap/python/tests/run.in: Adjust.

src/tests/ltlrel.test

@@ -1,79 +0,0 @@
-#! /bin/sh
-# -*- coding: utf-8 -*-
-# Copyright (C) 2013 Laboratoire de Recherche et Dévelopement to
-# 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/>.
-
-
-# Check for the constant_term visitor
-
-. ./defs || exit 1
-
-set -e
-
-t()
-{
-   cat > tmp.$$
-   run 0 ../ltlrel "`head -n 1 tmp.$$`" > out.$$
-   sed 1d tmp.$$ > exp.$$
-   diff out.$$ exp.$$
-}
-
-t <<EOF
-a & Xb & c
-p0 & Xp1
-  p0   ->   a & c
-  p1   ->   b
-EOF
-
-t <<EOF
-a & b & GF(a | c) & FG(a | c)
-p0 & p1 & GF(p0 | p2) & FG(p0 | p2)
-  p0   ->   a
-  p1   ->   b
-  p2   ->   c
-EOF
-
-t <<EOF
-b & GF(a | c) & FG(a | c)
-p0 & GFp1 & FGp1
-  p0   ->   b
-  p1   ->   a | c
-EOF
-
-t <<EOF
-G(d & e) | FG(Xf| !c) | h | i
-p0 | Gp1 | FG(p2 | Xp3)
-  p0   ->   h | i
-  p1   ->   d & e
-  p2   ->   !c
-  p3   ->   f
-EOF
-
-t <<EOF
-a <-> b
-p0
-  p0   ->   a <-> b
-EOF
-
-t <<EOF
-(a <-> b) & X(b -> c)
-(p0 <-> p1) & X(p1 -> p2)
-  p0   ->   a
-  p1   ->   b
-  p2   ->   c
-EOF