RecBackgroundEvent → Tracking Relation

File in Reconstruction/RecBackground/RecBackgroundEvent	Includes file in Tracking
RecBackgroundEvent / BeamBackgroundData.h	TrkEvent / TrkSegment / TrkSegment / Tracking/TrkEvent/TrkSegment/TrkSegment/Segment.h
RecBackgroundEvent / BeamBackgroundData.h	TrkEvent / TrkSegment / TrkSegment / SegmentCollection.h