Cherry-pick MR !347 to 2018-patches branch
Add tuple tools for PV -> MC PV associations
See merge request !347 (merged)
(cherry picked from commit 948a2295)
71d9c6a9 Remove redundant check in PV2MC tool; add tuple tools for PV associations. 3e042b00 Fix PV2MC so that secondary sort is by smallest chi2 rather than largest; add… 026f144c Use Gaudi::Property and tidy up (remove unneeded includes). 08fc501f Add missing nullptr initialisation. 83408bab Fix a bug - remove wrong if(debug) line. 88a91d03 Remove unneeded debug output.