for PHYS14 lepton MVA new training
Merge branch 'CMGTools-from-CMSSW_7_2_3' of https://github.com/cbotta/cmg-cmssw into CMGTools-from-CMSSW_7_2_3
Also update the lepton MVA computation at tree production stage
Switch to the full SingleMu Run2012D
Adding b-jet multiplicity with CMVA tagger
Add to the leptons the CMVA discriminator of associated jet
Redefine nSoftBLoose25, nSoftBMedium25, nSoftBTight25 as just the number of IVFs not matched to jets with pt > 25 GeV and passing different SVMVA working points, without adding to it the number of b-jets above 25 GeV