Copyright for lrslib source package in Xenial

Source:   http://cgm.cs.mcgill.ca/~avis/C/lrs.html

Files: *
Copyright: © Copyright 1999-2015 David Avis 
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, you can find the full license text for the GPL-2 at /usr/share/common-licenses/GPL-2

Files: fourier.c
Copyright: © 2008 Copyright Tallman Zacharia Nkgau
License: GPL-2+

Files: lrslong.c
Copyright: © 1998-2015 Copyright Ambrose Marzetta, David Avis
License: GPL-2+

Files: rat2float.c
Copyright: © 2006-2015 Copyright David Bremner, David Avis
License: GPL-2+

Files: debian/* 
Copyright: © 2008-2015, David Bremner 
License: GPL-2+
 On Debian systems, you can find the full license text for the GPL-2 at /usr/share/common-licenses/GPL-2