OsTerrainSetHeight

LSL: integer osTerrainSetHeight(integer x, integer y, float val)

C#: integer osTerrainSetHeight(integer x, integer y, double val)

Sets terrain height X & Y Values, double = float.

osTerrainFlush should be called after all the terrain-changes have been done to update Terrain Data.

NOTE: INCOMPLETE, needs further data to complete with example.