Implement external events approach to input user actions into engine.
Doesn't work for some obscure reason ("Error: Unknown method parameter type: LongEventType")
foreach(dir
Fonts
Forts
Graphics
Locale
Maps
Missions
Music
Names
Scripts
Sounds
Themes
misc
)
add_subdirectory(${dir})
endforeach(dir)
if(${GL2})
add_subdirectory(Shaders)
endif(${GL2})