This reduces CheckLand ~5.5% on average over prior making the overall reduction ~77.4% instead of ~81.9%. It does skip centre pixel in odd w/h, but that really shouldn't matter much in this case. Can alter if any objects are noticeably off.

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