Move ClassicFacingFudge support to Mods.Cnc

This moves the TD/RA-specific re-mapping of sprite facings
and coordinates to Mods.Cnc.

OpenRA.Mods.Cnc/FileFormats/HvaReader.cs

@@ -49,7 +49,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 						Transforms[c + ids[k]] = s.ReadFloat();
 
 					Array.Copy(Transforms, 16 * (LimbCount * j + i), testMatrix, 0, 16);
-					if (Util.MatrixInverse(testMatrix) == null)
+					if (OpenRA.Graphics.Util.MatrixInverse(testMatrix) == null)
 						throw new InvalidDataException(
 							"The transformation matrix for HVA file `{0}` section {1} frame {2} is invalid because it is not invertible!"
 							.F(fileName, i, j));