Copyright for xfce4-cellmodem-plugin source package in Trusty

This package was downloaded from 

Files: *
Copyright: © 2006-2007 Alvaro Lopes 
License: GPL-2+

Files: panel-plugin/big_leds.xpm
Copyright: © 2001-2006 Alvaro Lopez 
License: GPL-2+

Files: debian/*
Copyright: © 2008 Evgeni Golov 
License: GPL-any

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