Changes since CMSSW_7_0_0:
- #2575 from @nclopezo: xrootd -- Multisource xrootd v3
- #2308 from @perrotta: HLT -- Switch AK5 to AK4 and IC5 to IC4 in all HLT configs
- #2360 from @cerati: Validation -- Change default cfg track assoc 70 x
- #2465 from @inugent: GeneratorInterface/ExternalDecays -- Adding new DECAY_NOLONGLIFE_NOTAU.DEC to run Tauola with EvtGen
- #2478 from @franzoni: Configuration/PyReleaseValidation -- /HIMinBiasUPC/HIRun2011-v1/RAW and run 182124 for hi 2011 relval