Copyright for debhelper source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/

Files: *
Copyright: 1997-2011 Joey Hess 
           2015-2016 Niels Thykier 
License: GPL-2+

Files: examples/* autoscripts/*
Copyright: 1997-2011 Joey Hess 
License: public-domain
 These files are in the public domain.
 .
 Pedants who believe I cannot legally say that code I have written is in
 the public domain may consider them instead to be licensed as follows:
 .
 Redistribution and use in source and binary forms, with or without
 modification, are permitted under any circumstances. No warranty.

Files: dh_perl
Copyright: Brendan O'Dea 
License: GPL-2+

Files: dh_installcatalogs
Copyright: Adam Di Carlo 
License: GPL-2+

Files: dh_usrlocal
Copyright: Andrew Stribblehill 
License: GPL-2+

Files: dh_installlogcheck
Copyright: Jon Middleton 
License: GPL-2+

Files: dh_installudev
Copyright: Marco d'Itri 
License: GPL-2+

Files: dh_lintian
Copyright: Steve Robbins 
License: GPL-2+

Files: dh_md5sums
Copyright: Charles Briscoe-Smith 
License: GPL-2+

Files: dh_bugfiles
Copyright: Modestas Vainius 
License: GPL-2+

Files: dh_installinit
Copyright: 1997-2008 Joey Hess 
           2009,2011 Canonical Ltd.
License: GPL-3+

Files: dh_installgsettings
Copyright: 2010 Laurent Bigonville 
           2011 Josselin Mouette 
License: GPL-2+

Files: dh_ucf
Copyright: 2011 Jeroen Schot 
License: GPL-2+

Files: dh_systemd_enable dh_systemd_start
Copyright: 2013 Michael Stapelberg
License: BSD-3-clause

Files: lib/Debian/Debhelper/Buildsystem.pm lib/Debian/Debhelper/Buildsystem/* lib/Debian/Debhelper/Dh_Buildsystems.pm
Copyright: 2008-2009 Modestas Vainius
License: GPL-2+

Files: lib/Debian/Debhelper/Buildsystem/qmake.pm
Copyright: 2010 Kel Modderman
License: GPL-2+

Files: man/po4a/po/fr.po
Copyright: 2005-2011 Valery Perrin 
License: GPL-2+

Files: man/po4a/po/es.po
Copyright: 2005-2010 Software in the Public Interest
License: GPL-2+

Files: man/po4a/po/de.po
Copyright: 2011 Chris Leick
License: GPL-2+

License: GPL-2+
 The full text of the GPL version 2 is distributed in
 /usr/share/common-licenses/GPL-2 on Debian systems.

License: GPL-3+
 The full text of the GPL version 3 is distributed in
 /usr/share/common-licenses/GPL-3 on Debian systems.

License: BSD-3-clause
 All rights reserved.
 .
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
 .
     * Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
 .
     * Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
 .
     * Neither the name of Michael Stapelberg nor the
       names of contributors may be used to endorse or promote products
       derived from this software without specific prior written permission.
 .
 THIS SOFTWARE IS PROVIDED BY Michael Stapelberg ''AS IS'' AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL Michael Stapelberg BE LIABLE FOR ANY
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.