fixed mother/daughter gen matching
Merge branch 'kjung-for-merge' into forest_CMSSW_5_3_20

Conflicts:
	HeavyIonsAnalysis/TrackAnalysis/src/HiGenAnalyzer.cc
Revert "Revert "added gen-matching and parentage information to track tree""

This reverts commit 739f956de1b2c3cfd50354b66058654d22ae01b7.
fixed bug in gen particle matching
fixed bug in gen particle matching