TrigEgammaMatchingTool → TrigSteer Relation

File in Trigger/TrigAnalysis/TrigEgammaMatchingTool	Includes file in Trigger/TrigSteer
Root / TrigEgammaMatchingToolMT.cxx	DecisionHandling / DecisionHandling / DecisionHandling/DecisionHandling/HLTIdentifier.h
Root / TrigEgammaMatchingToolMT.cxx	DecisionHandling / DecisionHandling / DecisionHandling/DecisionHandling/TrigCompositeUtils.h
src / TrigEgammaMatchingToolMTTest.cxx	DecisionHandling / DecisionHandling / DecisionHandling/DecisionHandling/TrigCompositeUtils.h