Add missing license.

autoclean.sh

 #!/bin/sh
+#
+# vi:set et ai sw=2 sts=2 ts=2: */
+#-
+# Copyright (c) 2011 Olivier Fourdan
+#
+# 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.
+
 (type xdt-autogen) >/dev/null 2>&1 || {
   cat >&2 <<EOF
 autoclean.sh: You don't seem to have the Xfce development tools installed on