7_0_X Change DataMixer to merge CSC Strip Digis instead of adding duplicates
Merge pull request #4324 from mdhildreth/70X_Merge_CSC_StripDigis_for_Premixing

Change DataMixer to merge CSC Strip Digis instead of adding duplicates
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X