backport EvtGen, Photos++, and Tauola++ patch
Merge branch 'backportEvtgenPhotosppTo7_1_X' of github.com:inugent/cmssw into from-CMSSW_7_1_X_2014-08-15-0200

Conflicts:
	GeneratorInterface/TauolaInterface/plugins/Tauolapp/TauolappInterface.cc
Merge compatible ExternalDecayDriver
EvtGen 1.30
Merge pull request #4970 from inugent/backportEvtgenPhotosppTo7_1_X

Backport evtgen photospp to7 1 x
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X