. Updated CMSSW configuration file used to write Selective
  Readout settings in condition database
disable LTO for biglibs with gcc 4.9.x
Convert DTDigitizer to stream module

Made DTDigitizer thread safe by replacing std::cout with LogPrint.
Once this was done DTDigitizer was converted to a stream module.
In addition, fixed a once pre-job memory leak.
Make RPCDigiProducer a stream module

The static analyzer did not find a thread safety problem with the
RPCDigiProducer so it was changed to a stream module.
Convert HcalRealisticZS to stream module

The HcalRealisticZS uses the HcalDbService which the static analyzer
has complained about because of that object's use of the HCAL
conditions containers. However, upon further investigation the HcalDbService
is thread safe for this use. In addition, an upcoming change to
the conditions containers will solve the remaining thread unsafe uses
of those containers.
With that in mind, it is safe to convert HcalRealisticZS to a stream module.
Merge pull request #6082 from Dr15Jones/streamRPCDigiProducer

Make RPCDigiProducer a stream module
Merge pull request #6081 from Dr15Jones/streamDTDigitizer

Convert DTDigitizer to stream module
Merge pull request #6079 from grasph/update-sr-settings

Updated CMSSW configuration file used to write Selective Readout into condDB
Merge pull request #6080 from fwyzard/disable_LTO_for_biglibs

disable LTO for biglibs with gcc 4.9.x
Merge pull request #6092 from Dr15Jones/streamHcalRealisticZS

Convert HcalRealisticZS to stream module
Merge remote branch 'origin/CMSSW_7_3_X' into CMSSW_7_0_X