MET branches added
Merge remote-tracking branch 'swagata/master'
Added MET in the gamma+jet n-tuplizer
Analyzers/*/CalcRespCorrPhotonPlusJet.* added fields nProcessed_ (miscItems), metType1_* (pfTree). The relocated miscItems folder is expanded with ignoreHLT,doXJets fields
DataFormat/test/pf_gammajettree.h updated to reflect current n-tuple fields
DataFormat/interface/HistoCollector.* added a function by Chris Seez, calc_effSigma(TH1*)
DataFormat/test/analyzePFGammaJetTree.C print effSigma value for the shown TH1D histograms