Copyright for nip2 source package in Lunar

This package was debianized by Jay Berkenbilt  on
October 2, 2004 and took over by Laszlo Boszormenyi (GCS)  on
September 2, 2015.

It was downloaded from https://github.com/libvips/nip2

Upstream Maintainers:
  John Cupitt 
  Kirk Martinez 
  Joe Padfield 

Many others contributed as well; see the file THANKS for details.

Copyright (C) 1990-2011 Imperial College, London and others

  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, refer to /usr/share/common-licenses/GPL-2
for the complete text of the GNU General Public License.