Thin egamma clusters in PHYSLITE
Keep only egammaClusters associated to AnalysisPhotons and AnalysisElectrons in PHYSLITE Also fix a bug in the cluster thinning code where all clusters would be kept if the input particle collection was empty
Keep only egammaClusters associated to AnalysisPhotons and AnalysisElectrons in PHYSLITE Also fix a bug in the cluster thinning code where all clusters would be kept if the input particle collection was empty