* fix divbyzero found by GetGravity test (cWindSpeed was used where cMaxWindSpeed should have been)
* make GetGravity return same integer value that was given by SetGravity (by rounding away precision errors rather than just truncate) - a problem also identified by the test :P
[patterns]
**.h = native
**.c = native
**.cpp = native
**.lua = native
**.txt = native
**.pas = native
**.inc = native
**.hs = native