xAODTrigEgamma → xAODBase Relation

File in Event/xAOD/xAODTrigEgamma/xAODTrigEgamma	Includes file in Event/xAOD/xAODBase
versions / TrigElectron_v1.h	xAODBase / Event/xAOD/xAODBase/xAODBase/IParticle.h
versions / TrigPhoton_v1.h	xAODBase / Event/xAOD/xAODBase/xAODBase/IParticle.h