fix to BeautyTomuCharmTo3h.cpp to allow selecting oscillating B mesons
Port the merging of branch 'rvazquez.FixToBeautyTomuCharmTo3h' into 'Sim09-upgrade'
Corresponds to merge request !390 (merged) in 'Sim09' and !398 (merged) in 'master'
(cherry picked from commit 7f91082d)
730844b4 fix to BeautyTomuCharmTo3h.cpp to allow selecting oscillating B mesons