VLC makefiles: mention GPL license

Change-Id: Iaa7a554d2c66857bfe791b9c14e09d36d7ec773d
Tuleap: #350

contrib/src/main.mak

 # Main makefile for VLC 3rd party libraries ("contrib")
 # Copyright (C) 2003-2011 the VideoLAN team
 #
-# This file is under the same license as the vlc package.
+# This program 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 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+#
 
 all: install
 

extras/tools/tools.mak

 # Copyright (C) 2003-2011 the VideoLAN team
 #
-# This file is under the same license as the vlc package.
+# This program 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 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+#
 
 include packages.mak