Rename tgbatest into tests.

* src/Makefile.am, README, configure.ac: update references.
* src/tgbatest/: rename as...
* src/tests/: ...this!

src/tests/readsat.cc

@@ -0,0 +1,30 @@
+// -*- coding: utf-8 -*-
+// Copyright (C) 2013, 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/>.
+
+#include <iostream>
+#include "misc/satsolver.hh"
+
+int main()
+{
+  spot::satsolver::solution sol = spot::satsolver_get_solution("-");
+  for (spot::satsolver::solution::const_iterator i = sol.begin();
+       i != sol.end(); ++i)
+    std::cout << ' ' << *i;
+  std::cout << '\n';
+}