CHANGE: Large address aware building for MinGW (Prissi, from Standard)
FIX: Do not checksum over uninitialised fields (Prissi, from Standard)
CHANGE: Try to rearrange some structure to save memory  (Prissi, from Standard)
FIX:  	x64 compiles with MSVC  (Prissi, from Standard)
FIX: Crashes if world is destroyed after loading without a sync-step being performed (Dwachs, from Standard)