TrkEventTPCnv → DetectorDescription Relation

File in Tracking/TrkEventCnv/TrkEventTPCnv/TrkEventTPCnv	Includes file in DetectorDescription
helpers / EigenHelpers.h	GeoPrimitives / GeoPrimitives / GeoPrimitives.h
TrkEventPrimitives / LocalPositionCnv_p1.h	GeoPrimitives / GeoPrimitives / GeoPrimitives.h