Engine: * Converted all strings without maximum lengths to ansistrings (eliminates 255 char limit) or shortstrings (needs some testing) * Goal/mission display now stays within screen borders even if it's very long * Extended mine game mode display to respect no timer and random timer

foreach(dir "Fonts" "Forts" "Graphics" "Locale" "Maps" "Music" "Sounds" "Themes" "Missions" "Names")
  add_subdirectory(${dir})
endforeach(dir)