Copyright for btrfs-compsize source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: compsize
Source: https://github.com/kilobyte/compsize


Files: *
Copyright: 2017 Adam Borowski 
           2017 Timofey Titovets 
License: GPL-2+

Files: debian/*
Copyright: 2017 Adam Borowski 
License: GPL-2+

Files: radix-tree.*
Copyright: 2001 Momchil Velikov, Christoph Hellwig
           2005-2017 other kernel and btrfs-progs maintainers
License: GPL-2

Files: kerncompat.h
Copyright: 2007 Chris Mason at Oracle, based on work of a multitude of kernel
           contributors
           2007-2017 many others
License: 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.
 .
 This program 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, write to the Free Software Foundation, Inc., 51 Franklin
 St, Fifth Floor, Boston, MA 02110-1301 USA
 .
 On Debian systems, the complete text of the GNU General Public License v2
 (GPL) can be found in /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; version 2 of the License.
 .
 This program 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, write to the Free Software Foundation, Inc., 51 Franklin
 St, Fifth Floor, Boston, MA 02110-1301 USA
 .
 On Debian systems, the complete text of the GNU General Public License v2
 (GPL) can be found in /usr/share/common-licenses/GPL-2.