Copyright for mrtg source package in Mantic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: mrtg
Upstream-Contact: https://github.com/oetiker/mrtg/issues
Source: http://oss.oetiker.ch/mrtg/ or
        https://github.com/oetiker/mrtg/tree/master/src
Comment: The current e-mail address of Tobias Oetiker is .

Files: *
Copyright: ?         John Heenan
           ?         Simon Lenine
           1990-1999 Net Improvement Consulting Pty Limited
           1995-2022 Tobias Oetiker and all the Contributors to MRTG
           1997      Balthasar Indermuehle 
           1997      Carlos Canau 
           1999      Kevin Benton
           2001      David A. Pérez 
           2001      Scott Ripley
           2007      The Open Source Community
License: GPL-2+

Files: contrib/whodo/GIFgraph/GIFgraph/*
       lib/mrtg2/Pod/InputObjects.pm
       lib/mrtg2/Pod/Parser.pm
       lib/mrtg2/Pod/PlainText.pm
       lib/mrtg2/Pod/Select.pm
       lib/mrtg2/Pod/Usage.pm
Copyright: 1995-1998 Martien Verbruggen
           1996-2000 Bradford Appleton
           1999-2000 Marek Rouchal
           1999-2000 Russ Allbery 
           2007      Mike Mitchell
License: Perl

Files: lib/mrtg2/BER.pm
       lib/mrtg2/SNMP_Session.pm
Copyright: 1995-2008 Simon Leinen
License: Artistic-2.0

Files: lib/mrtg2/Net_SNMP_util.pm
Copyright: 2005-2011 Mike Mitchell
License: Perl or Artistic-2.0

Files: src/strftime.c
Copyright: ?    jim nutt
           1989 Rob Duff
           2004 Tobi Oetiker
License: Public-Domain

Files: debian/*
Copyright: 1997-1999 Dermot Bradley 
           1997-2002 Joey Hess 
           1999-2002 Michael-John Turner 
           1999      Raphael Hertzog 
           2003      Paul Slootman 
           2003-2004 Shiju p. Nair 
           2005-2015 Adam Majer 
           2005      Christian Perrier 
           2005      Marc 'HE' Brockschmidt 
           2005      tony mancill 
           2008-2020 Sandro Tosi 
           2011      Dominic Hargreaves 
           2017      Roland Rosenfeld 
           2019      Ondřej Nový 
           2021-2023 Joao Eriberto Mota Filho 
License: GPL-2+

License: GPL-2+
 This program is free software; you can redistribute it and/or modify it
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 Software Foundation; either version 2 of the License, or (at your option)
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 This program is distributed in the hope that it will be useful, but WITHOUT
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 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 more details.
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 On Debian GNU/Linux systems, you can find a copy of the GNU General Public
 License v2 in /usr/share/common-licenses/GPL-2.

License: Perl
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License: Public-Domain
 This file is under Public Domain.