Merged CMSSW_6_2_X_SLHC from repository gem-sw
only neutral background modeling
Merged refs/pull/3151/head from repository cms-sw
Merged refs/pull/3153/head from repository cms-sw
Merged neutral_bkg_14Mar from repository mileva
Merge pull request #3185 from dildick/New-bkg-model-GEM-digitizer

New background model for GEM digitizer