added new WIP b-tagging effs calculator
preliminary setup code
wip in produce
Merge branch 'master' of github.com:HEP-KBFI/stpol into beffcalcs2
Merge branch 'beffcalcs2' of github.com:HEP-KBFI/stpol into beffcalcs2

Conflicts:
	CMSSW_5_3_11/src/SingleTopPolarization/BTagSystematicsWeightProducer/src/BTagSystematicsWeightProducer.cc
Merge branch 'master' into beffcalcs2
Merge branch 'beffcalcs2'
more printout
added gen level cos theta study