Latest attempt at jet smearing in BAT...closer to working...

Finally it compiles!
But I've been checking it today: I've run BAT on a test ntuple with 1000 events (/storage/phjaj/CMSSW_5_3_7_nTuple_v10/src/TTJets_nTuple_53X_noskim_mc.root) and compared the BAT output with that which I get without these jet smearing changes. However, the histograms look frustatingly similar so there is probably still a little more to do...