[ofiwg] [libfabric-users] same process, multiple endpoints

[Hefty, Sean]

> I actually found a working solution. Not sure is the most canonical way,
> but it works:
> 1) call fi_getinfo (with some hints to select a provider) without any
> address/flag
> 2) open a domain
> 3) call 2x fi_getinfo (with the same set of hints to get the same
> provider as point 1) with specific addresses/flags
> 4) instantiate two endpoints by the two fi_info structures (point 3) and
> the opened domain (point 2)

This works, and is part of the reason why we have the dupinfo call.