new pileup mixing with OOT PU, usable only with the DigiRecoMixing option
*revert removing check for json file after EoLS has appeared
*check that LS is consistent with the one coming from information shared among multiple CMSSW processes
*add several info logs to verify what was written in the lock file
Merge pull request #4310 from giamman/new-mixing-option-with-oot

new pileup mixing with OOT PU
Merge pull request #4399 from smorovic/EvF-fixes-7_2_X

EvF lumiblock consistency cross-check
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X