Add HFShowerLibrary_npmt_eta4_16en.root to SimG4CMS/Calo data files.

Fixes #700.
Merge pull request #704 from degano/data_simg4cmscalo_71X

Add HFShowerLibrary_npmt_eta4_16en.root to SimG4CMS/Calo data files.
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable