Update DigiToRawDM_cff to send Selective Readout Ecal Digis to DigiToRaw packer
add new DataMixing sequence for PreMixing
Modify postLS1Customs.py to put HO in postLS1 configuration
Merge pull request #2255 from mdhildreth/Add_HO_Customisation_for_postLS1_configuration

Simulation fixes -- Modify postLS1Customs.py to put HO in postLS1 configuration
Merge pull request #2215 from mdhildreth/Sequence_Modifications_for_PreMixing

Simulation fixes -- Sequence modifications for pre mixing
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