Copyright for tomoyo-tools source package in Bionic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: tomoyo-tools
Upstream-Author: Tetsuo Handa 
                 Toshiharu Harada 
Source: https://osdn.net/projects/tomoyo/releases/p9818

Files: *
Copyright: 2009-2017 NTT DATA CORPORATION
License: GPL-2

Files: debian/*
Copyright: 2009-2018 Hideki Yamane 
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 version 2 only
 as published by the Free Software Foundation.
 . 
 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.
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.