Move CMSSW_7_4_X to be ROOT6 based.

[ktf]

No description provided.

[cmsbuild]

A new Pull Request was created by @ktf (Giulio Eulisse) for CMSSW_7_4_X.

Move CMSSW_7_4_X to be ROOT6 based.

It involves the following packages:

AnalysisDataFormats/SUSYBSMObjects
AnalysisDataFormats/TrackInfo
CalibMuon/DTCalibration
CalibTracker/SiStripQuality
CommonTools/ParticleFlow
CommonTools/Utils
CondCore/CondDB
CondCore/DBCommon
CondCore/IOVService
CondCore/ORA
CondCore/Utilities
CondFormats/BTauObjects
CondFormats/PhysicsToolsObjects
CondFormats/SiStripObjects
DQM/SiStripCommissioningAnalysis
DQM/SiStripMonitorClient
DQMOffline/Trigger
DataFormats/BTauReco
DataFormats/BeamSpot
DataFormats/CSCDigi
DataFormats/CSCRecHit
DataFormats/CaloRecHit
DataFormats/Candidate
DataFormats/Common
DataFormats/DTDigi
DataFormats/DTRecHit
DataFormats/DetId
DataFormats/EgammaCandidates
DataFormats/EgammaReco
DataFormats/FEDRawData
DataFormats/FWLite
DataFormats/GsfTrackReco
DataFormats/HepMCCandidate
DataFormats/JetReco
DataFormats/L1GlobalCaloTrigger
DataFormats/L1GlobalTrigger
DataFormats/L1Trigger
DataFormats/Math
DataFormats/MuonDetId
DataFormats/MuonReco
DataFormats/MuonSeed
DataFormats/ParticleFlowCandidate
DataFormats/ParticleFlowReco
DataFormats/PatCandidates
DataFormats/Provenance
DataFormats/RPCDigi
DataFormats/RPCRecHit
DataFormats/RecoCandidate
DataFormats/SiStripCommon
DataFormats/StdDictionaries
DataFormats/Streamer
DataFormats/TauReco
DataFormats/TestObjects
DataFormats/TrackCandidate
DataFormats/TrackReco
DataFormats/TrackerRecHit2D
DataFormats/TrackingRecHit
DataFormats/TrajectorySeed
DataFormats/TrajectoryState
FWCore/Common
FWCore/FWLite
FWCore/Framework
FWCore/MessageLogger
FWCore/Modules
FWCore/PluginManager
FWCore/ROOTTests
FWCore/RootAutoLibraryLoader
FWCore/Services
FWCore/TFWLiteSelector
FWCore/TFWLiteSelectorTest
FWCore/Utilities
FastSimDataFormats/External
FastSimDataFormats/NuclearInteractions
FastSimDataFormats/PileUpEvents
FastSimulation/MaterialEffects
Fireworks/Core

@covarell, @lveldere, @cerminar, @mommsen, @diguida, @bendavid, @civanch, @cmsbuild, @ktf, @vciulli, @Dr15Jones, @cvuosalo, @mdhildreth, @deguio, @slava77, @ggovi, @vadler, @mmusich, @mulhearn, @ssekmen, @nclopezo, @danduggan, @emeschi, @thuer, @monttj, @alja can you please review it and eventually sign? Thanks.
@ghellwig, @TaiSakuma, @jpavel, @rappoccio, @Martin-Grunewald, @ahinzmann, @threus, @venturia, @battibass, @makortel, @acaudron, @jhgoh, @lgray, @jdolen, @jlagram, @ferencek, @trocino, @rociovilar, @Sam-Harper, @wmtan, @VinInn, @nhanvtran, @schoef, @amagitte, @apfeiffer1, @abbiendi, @imarches, @gbenelli, @wddgit, @alja, @matt-komm, @mariadalfonso, @pvmulder, @bachtis this is something you requested to watch as well.
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@degano you are the release manager for this.
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[cmsbuild]

Pull request #8606 was updated. @covarell, @lveldere, @cerminar, @mommsen, @diguida, @bendavid, @civanch, @cmsbuild, @ktf, @vciulli, @Dr15Jones, @cvuosalo, @mdhildreth, @deguio, @slava77, @ggovi, @vadler, @mmusich, @mulhearn, @ssekmen, @nclopezo, @danduggan, @emeschi, @thuer, @monttj, @alja can you please check and sign again.

[ktf]

Merging this.