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/misc/satsolver.hh

@@ -1,100 +0,0 @@
-// -*- coding: utf-8 -*-
-// Copyright (C) 2013 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/>.
-
-#pragma once
-
-#include "common.hh"
-#include "tmpfile.hh"
-#include <vector>
-#include <stdexcept>
-#include <iosfwd>
-
-namespace spot
-{
-  class printable;
-
-  class clause_counter
-  {
-  private:
-    int count_;
-
-  public:
-    clause_counter()
-      : count_(0)
-    {
-    }
-
-    void check() const
-    {
-      if (count_ < 0)
-	throw std::runtime_error("too many SAT clauses (more than INT_MAX)");
-    }
-
-    clause_counter& operator++()
-    {
-      ++count_;
-      check();
-      return *this;
-    }
-
-    clause_counter& operator+=(int n)
-    {
-      count_ += n;
-      check();
-      return *this;
-    }
-
-    int nb_clauses() const
-    {
-      return count_;
-    }
-  };
-
-  /// \brief Interface with a SAT solver.
-  ///
-  /// Call start() to create some temporary file, then send DIMACs
-  /// text to the stream returned by operator(), and finally call
-  /// get_solution().
-  ///
-  /// The satsolver called can be configured via the
-  /// <code>SPOT_SATSOLVER</code> environment variable.  It
-  /// defaults to
-  ///    "satsolver -verb=0 %I >%O"
-  /// where %I and %O are replaced by input and output files.
-  class SPOT_API satsolver
-  {
-  public:
-    satsolver();
-    ~satsolver();
-
-    void start();
-    std::ostream& operator()();
-
-    typedef std::vector<int> solution;
-    typedef std::pair<int, solution> solution_pair;
-    solution_pair get_solution();
-  private:
-    temporary_file* cnf_tmp_;
-    std::ostream* cnf_stream_;
-  };
-
-  /// \brief Extract the solution of a SAT solver output.
-  SPOT_API satsolver::solution
-  satsolver_get_solution(const char* filename);
-}