rebase of SpinUPforTauola_7_2_X with conversion to Tauola++ lifetime calculation
adding validation file
adding validation file
update testing code for LHE
Merge pull request #5287 from inugent/SpinUPforTauola_7_2_X_V2

GeneratorInterface -- Spin u pfor tauola 7 2 x v2
Merge remote-tracking branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X