Copyright for gnubik source package in Xenial

This package was debianized by Florian Ernst  on
Wed, 21 Jul 2004 20:52:17 +0200.

It was downloaded from:

    http://www.gnu.org/software/gnubik/
    http://www.gnu.org/software/gnubik/download.html
    ftp://ftp.gnu.org/gnu/gnubik

Upstream authors, as listed in the file AUTHORS:

    | John Mark Darrington 
    |   is the main author and maintainer of this package.
    | 
    | Dale Mellor 
    |   wrote guile_hooks.c, guile_hooks.h, and all of the Scheme code; cube.c,
    |   cube_i.h, cube.h, move-queue.c, move-queue_i.h and move-queue.h were written
    |   based heavily on previous work by John Darrington.

Copyright:

    Copyright (C) 1998, 2003, 2004, 2007, 2008  John Darrington
    Copyright (C) 2004  Dale Mellor

License:

    | 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 3 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, see .

On Debian systems, the complete text of the GNU General Public
License can be found in `/usr/share/common-licenses/GPL-3'.

The Debian packaging is
Copyright (C) 2004-2005, Florian Ernst 
Copyright (C) 2005, Jose Carlos Medeiros 
Copyright (C) 2006-2007, 2009, Bart Martens 
and is licensed under the GPL, see above.

The files
    doc/gnubik.info
    doc/gnubik.texinfo
have this copyright and license:

    |    Copyright (C) 1998, 2003 John Darrington
    |                  2004 John Darrington, Dale Mellor
    | 
    |    Copying and distribution of this file, with or without modification,
    | are permitted in any medium without royalty provided the copyright
    | notice and this notice are preserved.

The file doc/gnubik-rubric has this copyright and license:

    | Copyright (C) 2004 John Darrington, Dale Mellor
    | 
    | Permission is granted to anyone to make or distribute verbatim
    | copies of this document as received, in any medium, provided that
    | the copyright notice and this permission notice are preserved,
    | thus giving the recipient permission to redistribute in turn.
    | 
    | Permission is granted to distribute modified versions of this
    | document, or of portions of it, under the above conditions,
    | provided also that they carry prominent notices stating who last
    | changed them.

The file po/sv.po has this copyright and license:

    | Copyright (C) 2006 Daniel Nylander
    | This file is distributed under the same license as the gnubik package.