Add missing copyright blurbs to sanity tests.

* src/sanity/80columns.test, src/sanity/includes.test,
src/sanity/private.test, src/sanity/style.test: Here.

src/sanity/80columns.test

 #! /bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2012 Laboratoire de Recherche et Développement de
+# l'Epita (LRDE).
+# Copyright (C) 2004, 2005 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 all files use at most 80 columns.
 

src/sanity/includes.test

 #! /bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2008, 2011, 2012 Laboratoire de Recherche et
+# Développement de l'Epita (LRDE).
+# Copyright (C) 2004, 2005 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 each header is self contained and generates no warning.
 

src/sanity/private.test

 #! /bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2013 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/>.
 
 # Make sure we do not install privated header, i.e., headers that
 # declare unexported functions.  We catch these by checking for

src/sanity/style.test

 #! /bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2009, 2010, 2011, 2012, 2013 Laboratoire de Recherche
+# et Développement de l'Epita (LRDE).
+# Copyright (C) 2004, 2005 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/>.
 
 # Ensure consistent style by catching common improper constructs.