Copyright for gftp source package in Xenial

This package was originally debianized by Martin Schulze on 5 Jan
1999, and later maintained by Brian E. Ermovick, then Josip Rodinand
and, then Aurelien Beaujean and, then Xavier Oswald. Today, it's
maintained by Cleto Martín 

It was downloaded from http://www.gftp.org/

Upstream Authors:
  Copyright (C) 1998-2009 Brian Masney 

Files: debian/*
  Copyright (C) 2011 Cleto Martín 
  License: GPL 1+

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