GEN-SIM recycle and MinBias PU using input from CMSSW_7_1_0_pre1
fix the RelvalRelva problem; needs attention at the next GEN-SIM re-creation; does not affect IB
cleanup baseDataSetRelease to remove multiple instances
fixing GEN-SIM input name for ZmumuJets_Pt_20_300_13 PU relval
change RunHI2011 to point to run 181913
change RunHI2011 to point to run 181913 (cleanup)
Merge pull request #2337 from cms-PdmV/from-CMSSW_7_1_0_pre2-new-GEN-SIM-newHIdata

Configuration -- Update to the postLs1 GEN-SIM and new HI input run