The following files are licensed other than under the GPL:

data/texpages/bdrops/backdrop0.png
data/texpages/bdrops/backdrop1.png
data/texpages/bdrops/backdrop2.png
	- CC BY SA 3.0	- Copyright (c) 2007-2008 "B. V. Edwards" <cathuria>
data/texpages/bdrops/backdrop4.png
data/texpages/bdrops/backdrop6.png
	- CC0		- Copyright (c) 2010-2011 jorzi
data/base/texpages/page-25-sky-urban.png
	- CC0, original work by cybersphinx
3rdparty/miniupnpc/*
	- BSD, copyright Thomas Bernard (http://miniupnp.free.fr)
3rdparty/quesoglc/*
	- LGPL 2.1, copyright Bertrand Coconnier
data/base/texpages/page-6-features-rockies.png
	- CC BY SA 3.0	- Copyright (c) 2009 <Mysteryem>
data/base/texpages/page-17-droid-weapons.png
	- CC BY SA 3.0	- Copyright (c) 2009 <Mysteryem>
data/base/components/prop/prsrwhl1.pie
data/base/components/prop/prslwhl1.pie
data/base/components/prop/prmrwhl1.pie
data/base/components/prop/prmlwhl1.pie
data/base/components/prop/prlrwhl1.pie
data/base/components/prop/prllwhl1.pie
data/base/components/prop/prhrwhl1.pie
data/base/components/prop/prhlwhl1.pie
	- CC BY SA 3.0 - Copyright (c) 2008 <Mysteryem>