Copyright for dirdiff source package in Mantic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: dirdiff
Source: https://www.samba.org/ftp/paulus/

Files: *
Copyright: 1999-2005 Paul Mackerras 
License: GPL-2+

Files: debian/*
Copyright: 2001-2008 Steve M. Robbins 
           2009      Santiago Sánchez Paz 
           2014-2022 Luciano Bello 
           2015      Sebastian Ramacher 
           2018      Sergei Golovan 
           2022      Andreas Tille 
           2022      Joao Eriberto Mota Filho 
           2022      Josenilson Ferreira da Silva 
License: GPL-2+

License: GPL-2+
 This program is free software; it may be used, copied, modified
 and distributed under the terms of the GNU General Public Licence,
 either version 2, or (at your option) any later version.
 .
 On Debian systems, the text of the GNU General Public Licence
 version 2 can be found in /usr/share/common-licenses/GPL-2.