same as pull request 2016
use meaningful labels instead of numbers for MixingMode
use meaningful labels instead of numbers for MixingMode
clean up
FastSimulation/PileUpProducer/python/mix_2012_Summer_inTimeOnly_cff.py
clean up
mixHitsAndTracks instead of mix, to ensure that PU information is saved
Merge pull request #2330 from giamman/preparation-for-new-mixing-part-8

FastSim -- Preparation for new mixing part 8