Remove use of Cintex in ROOT6 macros

[wmtan]

Cintex does not exist in ROOT6. This pull request removes the loading of libCintex.so and the enabling of Cintex from ROOT macros in the ROOT6 IB, since libCintex.so does not exist in ROOT6. The use of Cintex had previously been removed from other C++ code, but not from ROOT macros.
Please merge this request as soon as convenient.

[cmsbuild]

A new Pull Request was created by @wmtan for CMSSW_7_4_ROOT6_X.

Remove use of Cintex in ROOT6 macros

It involves the following packages:

CommonTools/ParticleFlow
DataFormats/ParticleFlowReco
FastSimulation/MaterialEffects
PhysicsTools/Heppy
PhysicsTools/MVAComputer
PhysicsTools/MVATrainer
RecoMuon/MuonIdentification
RecoParticleFlow/PFClusterProducer
RecoParticleFlow/PFClusterTools
RecoTauTag/TauTagTools
RecoTracker/TrackProducer
TrackingTools/TrackAssociator
Validation/EcalHits
Validation/GlobalDigis
Validation/GlobalHits
Validation/GlobalRecHits
Validation/MuonIdentification
Validation/RecoParticleFlow
Validation/TrackerHits

@civanch, @nclopezo, @StoyanStoynev, @lveldere, @danduggan, @mdhildreth, @monttj, @cmsbuild, @deguio, @slava77, @vadler can you please review it and eventually sign? Thanks.
@ghellwig, @rappoccio, @abbiendi, @argiro, @threus, @venturia, @mmarionncern, @battibass, @makortel, @acaudron, @lgray, @ferencek, @cerati, @trocino, @rociovilar, @jpavel, @GiacomoSguazzoni, @rovere, @VinInn, @bellan, @dgulhan, @imarches, @appeltel, @gpetruc, @matt-komm, @pvmulder, @bachtis this is something you requested to watch as well.
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[wmtan]

ping

[lveldere]

+1