MENU_PKG_GAMES_FLIGHTGEAR
  Here you'll find options for FlightGear

ROCKCFG_PKG_FLIGHTGEAR_OLK
  Include Oliver's multi-pilot networking support

ROCKCFG_PKG_FLIGHTGEAR_WEATHERCM
  Use WeatherCM instead of FGEnvironment

ROCKCFG_PKG_FLIGHTGEAR_THREADS
  Include tile loading threads