Converts TrigDecisionMaker, TrigDecisionCnvAlg, TrigDecisionCnvTool, TrigNavigationCnvAlg, TrigNavigationCnvTool to a MT formalism (I.e. Read/WriteHandles, Re-entrant).
Old-style JOs are updated.
Removes simple python decorations which were supposed to do this job (but are observed not to via data races).
NOTE: This legacy path is only active for R1 and R2 input RAW data.