CAA C++ API Modifications

GSMInterfaces

Entity	SP	Modification	To Do
GSMInterfaces/Protected/CATIGSMCorner.h/CATIGSMCorner/GetPlaneNormal	GA	INDM	Check that you don't use it
GSMInterfaces/Protected/CATIGSMCorner.h/CATIGSMCorner/SetPlaneNormal	GA	INDM	Check that you don't use it