new jet flavour definition
- migration to the consumes interface to make the code thread-safe

- minor code updates to make it work in 7_1_X (originally developed in 5_3_X)
minor tweaks to the config files
made PhysicsTools/JetExamples/test/printGenJetRatio.py functional again
Merge pull request #2395 from cms-btv-pog/NewJetFlavour_from-CMSSW_7_1_0_pre2

AT updates -- New jet flavour definition