(svn r5124) Add IsAircraftInHangar{Stopped,}(), which supersedes CheckStoppedInHangar()
-Fix: Be more strict what it means for an aircraft to be in a hangar: It's not just being stopped on a hangar tile

##name Greek
##ownname Ελληνικά
##plural 0
##isocode el_GR.UTF-8