Merged refs/pull/4914/head from repository cms-sw
fix miniaod heavy flavour partons
fix saving of photon mother and add mother of eles with pt > 3
add rekeying of daugthers in genJets using the packedGenParticles as target
fix the keep statement for proton and summary particles to void adding 100 more gluons
do not store the new association, saves 270bytes/ev
set numberOfMothers to 1 for packed gen
better with a ref validity check
Merge pull request #5037 from arizzi/MiniAOD-postCSA14-from-CMSSW_7_0_7-and-PR4914

Second bunch of miniAOD 70X changes post CSA14