cmgPackedCandidates with 16-bit floats: round quantities instead of truncating them, to avoid a systematic bias in aggregate quantities like jet pTs or masses
Merge pull request #29 from gpetruc/PackedCandidates_Fix16bitRounding-CMG_PAT_V5_18_from-CMSSW_5_3_14

cmgPackedCandidates: round 16bit floats instead of truncating them