Reove HF from isolation and add veto by ref in Photon iso
Merged topic_bugfix_pre7 from repository matteosan1
update pixel match filter and fix HF usage in PF isolation
bugfix
Merged topic_bugfix_pre7 from repository matteosan1
Fixed problem with edm::Refs from secondary source in RecoTrackAccumulator

edm::Ref like objects do not work when they come from the secondary source
used by the mixing module. To work around this one must get the container
directly and then use the index in the edm::Ref to find the right item in
the container. This change does this and properly handles copying from the
secondary source to the new edm::Event.
TrajectorySeeds are not handled by this change, since it was unknown if it
would be necessary. If they are needed, the same procedure done for the other
Refs can be done for them.
 try new feature of fillDescription
Merge pull request #3336 from matteosan1/topic_bugfix_pre7

HLT -- Topic updates to PFIso and PixelMatch
Merge pull request #3335 from Dr15Jones/fixRecoTrackAccumulator

FastSimulation/Tracking -- Fixed problem with edm::Refs from secondary source in RecoTrackAccumulat...
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X