Clean up unused variables.
Move surface type enum to API
Add copy constructor and destructor to ErrorObj.  Should fix problem with AngelScript on gcc.
Remove assumption on number of user parameters.  Should fix bug found by Erik Olson.
Clean up dead comments in Geom.h
Change Geom::m_LastScale from double to Parm
Make ScriptMgr::ExecuteScript return success flag.
Add default source capability to CustomGeom
Clean up spaces to tabs in Cone example
Add set center functionality to CustomGeom
Add Scale to CustomGeom
Add set surface type to CustomGeom
Clean up blank lines in CustomGeom