Update EvtBsMuMuKK and EvtBcVHad models for master branch
Updated EvtBsMuMuKK and EvtBcVHad models to include changes made in Sim09 branch (MR 414 and 439), including modernisation changes appropriate for the master branch.
Corresponds to MR !414 (merged) and !439 (merged) for Sim09
Edited by Gloria Corti