Copyright for iroffer source package in Bionic

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: iroffer
Source: http://iroffer.org

Files: *
Copyright: 1998-2005 David Johnson 
License: GPL-2+

Files: src/iroffer_md5.c
       src/iroffer_md5.h
Copyright: 1993 Colin Plumb
           1995 Ian Jackson 
License: public_domain

Files: debian/*
Copyright: 1999      Johnie Ingram 
           2002-2005 Decklin Foster 
           2005      Andrew Pollock 
           2006      Michael Ablassmeier 
           2006-2008 Aurélien GÉRÔME 
           2016      Joao Eriberto Mota Filho 
License: GPL-2+

License: GPL-2+
 This package 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 package 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, see 
 .
 On Debian systems, the complete text of the GNU General
 Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".

License: public_domain
 No copyright is claimed. This code is in the
 public domain; do with it what you wish.