adding DQMPhysics on top of FastSim
Mods for 7_0_X compatibility: make empty HcalUpgradeDigis, protect against missing CrossingFramePlaybackInfo
Modify inputTag type
Updated GTs for 710_pre3
Merge pull request #2517 from rcastello/CMSSW_7_1_pre3_AlcaGTupdate

Updated GTs for 710_pre3
Merge pull request #2448 from deguio/DQMPhysicsOnTopOfFastSim

DQM -- adding DQMPhysics on top of FastSim
Merge pull request #2491 from mdhildreth/PreMixing_mods_for_7_0_X_compatibility

Configuration/StandardSequences -- Pre mixing mods for 7 0 x compatibility
Reduced the number of threads used for testing from 8 to 4

Given the present highly serialized nature of the available modules, running 8 threads is a complete waste of resource. Dropping to 4 should still give us more than we need but hopefully free more resources for the IB RelVal tests.
Merge pull request #2537 from Dr15Jones/reduceRelValThreadsTo4

Reduced the number of threads used for testing from 8 to 4
Merge remote branch 'origin/CMSSW_7_0_X' into CMSSW_7_0_X
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X