Fix bug that caused daughters of particle with index 0 to not be assigned any mother
Merge branch 'CMSSW_7_2_X' of https://github.com/cms-sw/cmssw into GenParticlePrunerBugFix
Print mean lifetime at end of XtoFFfilter
Merge pull request #5008 from wulsin/GenParticlePrunerBugFix

Gen particle pruner bug fix
Merge pull request #5134 from tomalin/XtoFFfilterV2

GeneratorInterface/GenFilters -- Print mean lifetime at end of XtoFFfilter