ColumnarEgamma → ColumnarCore Relation

File in PhysicsAnalysis/Columnar/ColumnarEgamma	Includes file in PhysicsAnalysis/Columnar/ColumnarCore
ColumnarEgamma / EgammaDef.h	ColumnarCore / ContainerId.h
ColumnarEgamma / EgammaHelpers.h	ColumnarCore / ColumnAccessor.h