fix license

debian/copyright

@@ -10,4 +10,18 @@ Copyright:
 Copyright (c) 2003-2008 LOGILAB S.A. (Paris, FRANCE).
 http://www.logilab.fr/ -- mailto:contact@logilab.fr
 
-This code is under LGPL .
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser 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 St, Fifth Floor, Boston, MA 02110-1301, USA.
+
+On Debian systems, the complete text of the GNU Lesser General Public License
+may be found in '/usr/share/common-licenses/LGPL'.