cleanup user actions amd MC truth
legacy output module name for ConfDB compatibility
cms.Service --> cms.OutputModule
Merge pull request #4805 from smorovic/ShmStreamConsumer-72X

Shm stream consumer 72 x
Merge pull request #4803 from civanch/track_truth_cleaned

cleanup user actions and MC truth
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X