Copyright for base-passwd source package in Sid

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: base-passwd
Upstream-Contact: Colin Watson 

Files: *
Copyright: Copyright 1999-2002 Wichert Akkerman 
 Copyright 2002, 2003, 2004 Colin Watson 
License: GPL-2

Files:
 passwd.master
 group.master
License: public-domain
Copyright: PD; Originally written by Ian Murdock  and
 Bruce Perens .

Files: doc/*
Copyright: Copyright 2001, 2002 Joey Hess
 Copyright 2002, 2003, 2004, 2005, 2007 Colin Watson
 Copyright 2007 David Mandelberg
License: GPL-2

License: GPL-2
 On Debian and Debian-based systems, a copy of the GNU General Public
 License version 2 is available in /usr/share/common-licenses/GPL-2.