Move to 2.0.18 (20, 21 give error at run time)
	Added Muon Truth origin/type
	Added tau truth matching tool to XaodAnalysis
		(see https://svnweb.cern.ch/trac/atlasoff/browser/PhysicsAnalysis/TauID/TauAnalysisTools/trunk/util/TauAnalysisToolsExample.cxx on how to use)