Reverse merge 8417, 8415, 8413, 8412, and 8411 to revert unfinished
Mapchecker v2.1 from Grommit.
Update to MapChecker v2.0 from Grommit.
Properly allow setting of ->speed from Lua.
Allow default guard AI to use waypoints.
Allow default guard AI to use waypoints.
Fix spme multipart arches.
Fix spme multipart arches.