AthExXRT → AthenaKernel Relation

File in Control/AthenaExamples/AthExXRT	Includes file in Control/AthenaKernel
src / VectorAddOCLExampleAlg.h	AthenaKernel / AthenaKernel/AthenaKernel/SlotSpecificObj.h
src / VectorAddXRTExampleAlg.h	AthenaKernel / AthenaKernel/AthenaKernel/SlotSpecificObj.h
src / VectorMultOCLExampleAlg.h	AthenaKernel / AthenaKernel/AthenaKernel/SlotSpecificObj.h
src / VectorMultXRTExampleAlg.h	AthenaKernel / AthenaKernel/AthenaKernel/SlotSpecificObj.h