Add "Surfer" achievement to Space Invasion. Balance "Shield Miser" in Space Invasion. Fix disappearing ghost bug in Racer Extend waypoint limit to 8 in Racer Lengthen ghost tracking interval to improve performance in Racer. Allow users to view score between turns now that HideMission() is fixed.

[patterns]
**.h = native
**.c = native
**.cpp = native
**.lua = native
**.txt = native
**.pas = native
**.inc = native