CAA C++ API Modifications

ElecFlatteningItf Framework Modifications in V5R17

Entity	SP	Modification	To Do
ElecFlatteningItf/Public/CATIEhfFlatteningParameters.h/CATIEhfFlatteningParameters/GetPlane Prototype: `virtual HRESULT GetPlane(CATMathPlane* iopActivePlane)= 0;`	GA	MHBDM	Signature changed from a pointer into a reference.