:qrebin again

Conflicts:
	Validation/RecoVertex/src/PrimaryVertexAnalyzer4PUSlimmed.cc
fix last conflict
Merge pull request #5124 from cerati/rebin-vertex-validation-histos-v2

Rebin vertex validation histos v2
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X