FlowAfterburner → AtlasHepMC Relation

File in Generators/FlowAfterburner/FlowAfterburner	Includes file in Generators/AtlasHepMC
AddFlowByShifting.h	AtlasHepMC / Relatives.h
Generators/FlowAfterburner/FlowAfterburner/GenAccessIO.h	AtlasHepMC / GenParticle.h