input variables for photon regrssion energy correction  

This changes were in the PAT recipe with the branch, cms-analysis-tools:7_0_5-photon.
https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuidePATReleaseNotes70X

But it has never been integrated into the release.
After fixing merging conflict with CMSSW_7_0_X_2014-06-20-0200,
a new branch is created 7_0_X-photon which is corresponding to 7_0_5-photon.