[ofa-general] RDMAoE path resolution and multicast handling

[Liran Liss]

Hi,

We accept the recommendations for integrating rdmaoe path resolution and
multicast handling within the rdmacm code.
The main reasons are:
- It is the natural place to abstract transport differences.
- rdmaoe uses IP-based addressing, which is what rdmacm is all about.
- The sa interface is not widely used as an external interface, so not
supporting it won't be a big loss.
- Less disruptive to native IB code without code duplication.

Thanks for Sean, Robert, Or, and Yossi for their excellent feedback.

We will provide a new patch set that reflects this change in a few days.
--Liran