CAA C++ API Modifications

ENOVaultClientCPP Framework Modifications in V5R16

Entity	SP	Modification	To Do
ENOVaultClientCPP/Public/ENOVIVaultError.h/ENOVIVaultError/getCode Prototype: `void getCode(CATLONG32 & code);`	GA	MHBDM	Argument code is now formally a HRESULT which should have been the case and has no impact on existing applications.