TODO:
-----

Feature / issue				Status
----------------------------------------------------
CQ					in-progress
AV					in-progress
EP					in-progress
small msgs (un-ordered)			in-progress
support for multiple layering		-
(above is needed for multi-rail
 over ofi_rxm provider)
OFI_MULTI_RAIL env var			-
fi_dupinfo issue			-
App mode bit to make it aware		-
of list of rails in fi_info
addressing:				-
	- FI_ADDR_STRV
	- primary/failover
small msg ordering:			-
	- bounce buffers
large msg support:			-
	- use FI_VARIABLE_MSG
Memory registration			-
RMA					-
rail failure handling			-
rail selection / striping algorithm	-
Atomics					-
