add HI customizations
Add HF Shower library in FastSim
Merge pull request #6847 from cms-l1t-offline/l1t-heavy-ion-menu-740

add heavy ion postLS1 customizations
Merge pull request #6854 from Vlandr57/HFShowerLibrary10

Add HF Shower library in FastSim
Merge remote branch 'origin/CMSSW_7_4_X' into CMSSW_7_0_X