Copyright for ldm source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0
Upstream-Contact: LTSP upstream team 
Upstream-Name: ldm
Upstream-Source: https://git.launchpad.net/~ltsp-upstream/ltsp/+git/ldm

Files: *
Copyright: 
  2005-2015 Scott Balneaves and LTSP developers
License: GPL-2+

Files: debian/*
Copyright: 2007-2014 Vagrant Cascadian 
 2009 Ryan Niebur 
License: GPL-2+

Files: src/plugins/ssh/*
Copyright: 2014 Jakob Unterwurzacher 
 2014 ben-Nabiy Derush 
 2012-2013 Alkis Georgopoulos 
 2013 Scott Balneaves 
 2010-2012 Stéphane Graber 
 2012 Floris Bos / Maxnet 
 2012 Vagrant Cascadian 
 2011 Warren Togami 
 2010 Simon Poirier 
 2010 Vincent Vinet 
License: GPL-2+

Files: misc/ldm-dialog.c
Copyright: 2009 Ryan Niebur 
License: GPL-2+

Files: gtkgreet/greeter.c
Copyright: 2007-2008 Oliver Grawert 
 2007-2008 Scott Balneaves 
 2008 Warren Togami 
 2008 Stéphane Graber 
 2008 Scott Balneaves 
 2008 Vagrant Cascadian 
 2008 John Ellson 
 2008 Gideon Romm 
 2008 Jigish Gohil 
 2008 Wolfgang Schweer 
 2008 Toshio Kuratomi
 2015 Alkis Georgopoulos 
License: GPL-2

Files: gtkgreet/langwin.c
Copyright: 2007 Oliver Grawert 
 2007 Scott Balneaves 
 2008 Vagrant Cascadian 
 2008 Jigish Gohil 
 2008 Wolfgang Schweer 
 2009 Ryan Niebur 
License: GPL-2

Files: gtkgreet/sesswin.c
Copyright: 2007 Oliver Grawert 
 2007 Scott Balneaves 
 2008 Ryan Niebur 
License: GPL-2

Files: gtkgreet/hostwin.c
Copyright: 2007 Oliver Grawert 
 2008 Toshio Kuratomi
License: GPL-2

Files: gtkgreet/prefs.h gtkgreet/prefs.c gtkgreet/prefwin.c gtkgreet/prefwin.h
Copyright:
  2010 Simon Poirier, 
License: GPL-2+

Files: src/logging.c
License: GPL-2+
Copyright: 
  2010 Stéphane Graber , Revolution Linux

Files: src/ldm.c
Copyright: 2007-2008 Scott Balneaves 
 2005-2007 Oliver Grawert 
 2007-2008 Gideon Romm 
 2008 Vagrant Cascadian 
 2008 Warren Togami 
 2008 Ryan Niebur 
License: GPL-2+

Files: src/ldminfo.c
Copyright: 2007 Francis Giraldeau, 
 2007-2008 Scott Balneaves 
 2008-2009 Ryan Niebur 
 2014 ben-Nabiy Derush 
 2015 Alkis Georgopoulos 
License: GPL-2+

Files: generate_locale_list.py
Copyright: 2009 Ryan Niebur 
 2009 Vagrant Cascadian 
 2009 Stéphane Graber 
License: GPL-2+

Files: man/ldm.1
Copyright: 2007 Canonical Ltd
License: GPL-2+

Files: wwm/*
Copyright:
  2010 Scott Balneaves
  1999-2001 Ciaran Anscomb 
  1998-2000 Decklin Foster
  1994 David Hogan
  2010-2012 Stéphane Graber
  2010 David Goulet
  2010 Simon Poirier
  2010 Vincent Vinet
License: evilwm-aewm-9wm

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.
  .
  On Debian and Ubuntu systems, a copy of the GNU General Public License version
  2 may be found in the file /usr/share/common-licenses/GPL-2.

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; either version 2 of
  the License, or (at your option) any later version.
  .
  On Debian and Ubuntu systems, a copy of the GNU General Public License version
  2 may be found in the file /usr/share/common-licenses/GPL-2.

License: evilwm-aewm-9wm
  This is free software.  You can do what you want to it, but if it
  breaks something, you get to pay for the counselling.  The code was
  originally based on aewm, so this is distributed under the same terms,
  which follow.
  .
  AEWM LICENCE
  .
  Copyright (c) 1998-2000 Decklin Foster.
  .
  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS", WITHOUT ANY EXPRESS
  OR IMPLIED WARRANTIES OF ANY KIND. IN NO EVENT SHALL THE AUTHOR BE
  HELD LIABLE FOR ANY DAMAGES CONNECTED WITH THE USE OF THIS PROGRAM.
  .
  You are granted permission to copy, publish, distribute, and/or sell
  copies of this program and any modified versions or derived works,
  provided that this copyright and notice are not removed or altered.
  .
  Portions of the code were based on 9wm, which contains this license:
  .
  > 9wm is free software, and is Copyright (c) 1994 by David Hogan.
  > Permission is granted to all sentient beings to use this software,
  > to make copies of it, and to distribute those copies, provided
  > that:
  >
  >     (1) the copyright and licence notices are left intact
  >     (2) the recipients are aware that it is free software
  >     (3) any unapproved changes in functionality are either
  >           (i) only distributed as patches
  >       or (ii) distributed as a new program which is not called 9wm
  >               and whose documentation gives credit where it is due
  >     (4) the author is not held responsible for any defects
  >         or shortcomings in the software, or damages caused by it.
  >
  > There is no warranty for this software.  Have a nice day.