switch 13 TeV GEN-SIM to CMSSW_6_2_0_patch1-POSTLS162_V1_30Aug2013-v2
Merge pull request #2959 from franzoni/from-CMSSW_6_2_X_2014-03-19-1400-change-rel-GEN-SIM-13TeV

switch 13 TeV GEN-SIM to CMSSW_6_2_0_patch1-POSTLS162_V1_30Aug2013-v2