WIP: custom allocator/memory pool in HLT1
This introduces a custom allocator and fast event-local memory pool and uses it to remove [almost] all dynamic [de]allocation in HLT1 algorithms. See LHCb MR for more details.
Goes with LHCb!2313 (closed) and Rec!1845 (closed).
WIP because others are WIP
Edited by Olli Lupton