Hi,
I have converted the LICENSES file into a machine-readable copyright file that is used across the Debian distribution. One of its benefits is that you can easily spot missing copyright information. The following files are not accounted for in LICENSES hence I assume they are covered by your general GPL-2+ license. If this is not true, please let me know. You can find the "ufoai_copyright.py" script that I used to convert the LICENSES file here:
http://anonscm.debian.org/cgit/pkg-games/ufoai.gitMissing copyright information:
base/materials/africa.mat
base/materials/alienbase.mat
base/materials/baseattack.mat
base/materials/beach.mat
base/materials/bridge.mat
base/materials/bunker.mat
base/materials/city2.mat
base/materials/city3.mat
base/materials/city_industry.mat
base/materials/city_train.mat
base/materials/construction.mat
base/materials/corrupter_crash.mat
base/materials/country.mat
base/materials/desert.mat
base/materials/druglord.mat
base/materials/eaglenest.mat
base/materials/england.mat
base/materials/estate.mat
base/materials/excavation.mat
base/materials/farm.mat
base/materials/ferry.mat
base/materials/forest.mat
base/materials/frozen.mat
base/materials/gasstation.mat
base/materials/gate.mat
base/materials/harbor.mat
base/materials/hills.mat
base/materials/industrial.mat
base/materials/italy.mat
base/materials/japan.mat
base/materials/mansion.mat
base/materials/military_convoy.mat
base/materials/mine.mat
base/materials/neighbourhood.mat
base/materials/office.mat
base/materials/oriental.mat
base/materials/oriental_mosque.mat
base/materials/pipes_const.mat
base/materials/resort.mat
base/materials/rivertown.mat
base/materials/scout_crash.mat
base/materials/small_street.mat
base/materials/solarplant.mat
base/materials/spedition.mat
base/materials/tower.mat
base/materials/transport.mat
base/materials/tropic.mat
base/materials/ufocrash.mat
base/materials/urban.mat
base/materials/village.mat
base/materials/village2.mat
base/materials/wilderness.mat
base/models/animals/crocodile/croc.anm
base/models/civilians/male/soldier01.anm
base/models/objects/cameras/camera1.anm
base/models/objects/vegi/palm_a/palm1.anm
base/pics/icons/delete.png
base/pics/icons/delete_hovered.png
base/pics/implants/implant_amphetamine.png
base/pics/implants/implant_muscular.png
base/pics/maps/shots/beach.jpg
base/shaders/cook-torrance_fs.glsl
base/shaders/lerp_vs.glsl
base/shaders/simple_glow_fs.glsl
base/shaders/simple_glow_vs.glsl
base/maps/africa/af_house4a.map
base/maps/africa/af_house6.map
base/maps/africa/af_house6a.map
base/maps/africa/af_house6b.map
base/maps/alienb/ab_antimatter.map
base/maps/alienb/ab_entrance.map
base/maps/alienb/ab_hall_4way1.map
base/maps/alienb/ab_hall_cne1.map
base/maps/alienb/ab_hall_cnw1.map
base/maps/alienb/ab_hall_cse1.map
base/maps/alienb/ab_hall_csw1.map
base/maps/alienb/ab_hall_h1.map
base/maps/alienb/ab_hall_tbtm1.map
base/maps/alienb/ab_hall_ttop1.map
base/maps/alienb/ab_hall_v1.map
base/maps/alienb/ab_hall_v2.map
base/maps/alienb/ab_hangar.map
base/maps/alienb/ab_hub.map
base/maps/alienb/ab_lab.map
base/maps/alienb/ab_powercore.map
base/maps/alienb/ab_storage_v.map
base/maps/alienb/ab_ventl.map
base/maps/alienb/ab_ventr.map
base/maps/alienb/ab_wormhole.map
base/maps/alienbase.ump
base/maps/b/construction.map
base/maps/baseattack.ump
base/maps/bridge/br_craft_crash_scout.map
base/maps/compile.pl
base/maps/compile.py
base/maps/desert.ump
base/maps/farm2.ump
base/maps/farm2/f_craft_drop_firebird.map
base/maps/farm2/f_craft_drop_herakles.map
base/maps/farm2/f_craft_drop_raptor.map
base/maps/farm2/f_craft_ufo_fighter.map
base/maps/farm2/f_craft_ufo_scout.map
base/maps/forest/fr_f31.map
base/maps/forest/fr_f32.map
base/maps/forest/fr_f33.map
base/maps/forest/fr_f34.map
base/maps/forest/fr_f35.map
base/maps/forest/fr_f36.map
base/maps/forest/fr_f37.map
base/maps/forest/fr_f38.map
base/maps/forest/fr_f39.map
base/maps/forest/fr_f40.map
base/maps/forest/fr_f41.map
base/maps/forest/fr_f42.map
base/maps/forest/fr_f43.map
base/maps/forest/fr_f44.map
base/maps/forest/fr_f45.map
base/maps/forest/fr_f46.map
base/maps/forest/fr_f47.map
base/maps/forest/fr_f48.map
base/maps/forest/fr_f49.map
base/maps/forest/fr_f50.map
base/maps/forest/fr_f51.map
base/maps/forest/fr_f52.map
base/maps/forest/fr_f53.map
base/maps/forest/fr_f54.map
base/maps/forest/fr_h5.map
base/maps/forest/fr_h6.map
base/maps/forest/fr_h7.map
base/maps/gate.map
base/maps/hills.ump
base/maps/hills/craft_drop_herakles.map
base/maps/hills/craft_drop_raptor.map
base/maps/hills/craft_ufo_scout.map
base/maps/hills/filler_1s3_d.map
base/maps/hills/filler_1s4_d.map
base/maps/hills/filler_1s5.map
base/maps/hills/filler_1s6.map
base/maps/hills/house_15.map
base/maps/japan/ja_p_btl.map
base/maps/oriental/or_house_i.map
base/maps/oriental/or_house_k.map
base/maps/oriental/or_house_l.map
base/maps/oriental/or_house_m.map
base/maps/oriental/or_house_n.map
base/maps/oriental/or_minaret01.map
base/maps/oriental/or_minaret02.map
base/maps/oriental/or_minaret03.map
base/maps/oriental/or_minaret04.map
base/maps/oriental/or_shed_b.map
base/maps/oriental/or_shed_c.map
base/maps/oriental/or_stand_c.map
base/maps/oriental/or_stand_d.map
base/maps/oriental/or_stand_e.map
base/maps/oriental_mosque.ump
base/maps/oriental_mosque/om_craft_drop_firebird.map
base/maps/oriental_mosque/om_craft_drop_herakles.map
base/maps/oriental_mosque/om_craft_drop_raptor.map
base/maps/rescue.ump
base/maps/scout_crash.ump
base/maps/scout_crash/sc_craft_drop_firebird.map
base/maps/scout_crash/sc_craft_drop_herakles.map
base/maps/scout_crash/sc_craft_drop_raptor.map
base/maps/shared.ump
base/maps/small_house.map
base/maps/small_street.map
base/maps/tower.ump
base/maps/tower/t_craft_drop_herakles.map
base/maps/tower/t_craft_drop_raptor.map
base/maps/training_a.map
base/maps/training_b.map
base/maps/village2.ump
base/maps/village2/vil_b2x2_dentist01.map
base/maps/village2/vil_b2x2_diner01.map
base/maps/village2/vil_b2x2_house01.map
base/maps/village2/vil_b2x2_house02.map
base/maps/village2/vil_b2x2_house03.map
base/maps/village2/vil_b2x2_house05.map
base/maps/village2/vil_b2x2_house08.map
base/maps/village2/vil_b2x2_house09.map
base/maps/village2/vil_b2x4_house04.map
base/maps/village2/vil_b2x4_house06.map
base/maps/village2/vil_b2x4_house07.map
base/maps/village2/vil_b2x4_mart01.map
base/maps/village2/vil_b2x4_station01.map
base/maps/village2/vil_craft_drop_firebird.map
base/maps/village2/vil_craft_ufo_fighter.map
base/maps/village2/vil_craft_ufo_scout.map
base/maps/village2/vil_mp1.map
base/maps/village2/vil_mp2.map
base/maps/village2/vil_mp3.map
base/maps/village2/vil_p2x2_garden01.map
base/maps/village2/vil_p2x2_playground01.map
base/maps/village2/vil_p2x2_playground02.map
base/maps/village2/vil_p4x4_fountain01.map
base/maps/village2/vil_sc_ne01.map
base/maps/village2/vil_sc_nw01.map
base/maps/village2/vil_sc_sw01.map
base/maps/village2/vil_sh1x1_01.map
base/maps/village2/vil_sh_01.map
base/maps/village2/vil_sh_02.map
base/maps/village2/vil_sh_03.map
base/maps/village2/vil_st_east01.map
base/maps/village2/vil_st_north01.map
base/maps/village2/vil_st_north02.map
base/maps/village2/vil_st_south01.map
base/maps/village2/vil_st_west01.map
base/maps/village2/vil_sv1x1_01.map
base/maps/village2/vil_sv_01.map
base/maps/village2/vil_sv_02.map
base/maps/village2/vil_sv_03.map
base/maps/village2/vil_sv_04.map
base/maps/village2/vil_sx_01.map
base/textures/tex_buildings/concrete024.png
base/textures/tex_buildings/concrete024_nm.png
base/textures/tex_buildings/concrete_slabs01.png
base/textures/tex_buildings/concrete_slabs01_nm.png
base/textures/tex_buildings/concrete_slabs02.png
base/textures/tex_buildings/concrete_slabs02_nm.png
base/textures/tex_buildings/floor002.png
base/textures/tex_buildings/floor002_nm.png
base/textures/tex_buildings/floor011.png
base/textures/tex_buildings/floor022.png
base/textures/tex_buildings/floor022_nm.png
base/textures/tex_buildings/japwall003.png
base/textures/tex_buildings/japwall004.png
base/textures/tex_buildings/japwall005.png
base/textures/tex_buildings/japwall006.png
base/textures/tex_buildings/japwall007.png
base/textures/tex_buildings/wall019.png
base/textures/tex_buildings/wall_brick01.png
base/textures/tex_buildings/wall_brick01_nm.png
base/textures/tex_buildings/wall_brick01_sm.png
base/textures/tex_buildings/wall_se08.png