[ewg] ofed 1.2 multicast patch documentation

[Sean Hefty]

>I see that it does not contain the inform info event support, correct?
>
>If this is the case, what (git/branch) would be the correct start point
>for coding a consumer app that wants to register on SA events (traps).

Inform info event support was not complete by OFED feature freeze.  You can see
the currently posted code at:

git://git.openfabrics.org/~shefty/rdma-dev.git informinfo

- Sean