MuonSpectrometer → MCTruthClassifier Relation

File in MuonSpectrometer	Includes file in PhysicsAnalysis/MCTruthClassifier
MuonTruthAlgs / src / MuonTruthDecorationAlg.cxx	MCTruthClassifier / IMCTruthClassifier.h
MuonTruthAlgs / src / MuonTruthDecorationAlg.h	MCTruthClassifier / IMCTruthClassifier.h