fix hiccup in efficacy
fix bullet over map causing crash when breathing

i should really move this determination to places where the camera
switches height but god damn that's a lot of cases to cover
small fix in walk sound stuff

stops everyone making the flying sound even if they don't fly
because the TFTD flying sound REALLY doesn't fit this.
fix small error on civilian units
Fixed a bug in battleship spawning.
Merge remote-tracking branch 'upstream/master' into 32bit_Surface_Support