include mixing scenarios for dvmc exercises E8TeV_2012_run198588_BX_50ns 8TeV_2012_run203002_BX_50ns E8TeV_2012_run209148_BX_25ns E8TeV_2012_ZmumugSkim
Merge pull request #4338 from franzoni/GF_puscenarios_from-CMSSW_7_1_X_2014-06-22-1400

mixing scenarios for dvmc exercise
Merge pull request #1 from cms-sw/CMSSW_7_1_X

update to latest CMSSW_7_1_X