racer: if hog starts race without any weapon selected, select whatever is first
fix broken speech bubble display in chat. caused by
r1a6b9a98147c one line was forgotten when moving some code
fix TryPlaceOnLand's ambiguity/messup wrt to making terrain indestructible (had boolean parameter for indestructible AND landflags parameters that could contain lfIndestructibly)
placeSprite accepts any amount of landflags now; further WIP wrt cleanup/fixing
make enums crash-safe. and other fixes
WIP: PlaceSprite for lua API. also changed PlaceGirder so that it will return true/false for whether placing was successful too