WIP: Possible parallel implementation of Xicc++ -> Lambda_c+ pi+ lines
(JIRA LHCbHLT/LBHLT-128) based on separate independent Lambda_c+/Xi_c+ combinatorics for Xicc lines and for standard lines
(JIRA LHCbHLT/LBHLT-128) based on separate independent Lambda_c+/Xi_c+ combinatorics for Xicc lines and for standard lines