Added "Forts" to map type selection. This makes the mode easier selectable/discoverable. Also the slider can be used to adjust the distance between forts.
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})