Copyright for cltl source package in Noble

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Disclaimer: This package is in the contrib area because it downloads and
 installs non-free documentation.

Files: *
Copyright: 2002-2004 Kevin M. Rosenberg 
           2005-2009 Peter Van Eynde 
           2017-2018 Sébastien Villemot 
License: GPL-2+
 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; version 2 dated June, 1991, or (at
 your option) any later version.
 .
 On Debian systems, the complete text of version 2 of the GNU General
 Public License can be found in '/usr/share/common-licenses/GPL-2'.