[openib-general] new IB CM reject reason

[Sean Hefty]

>Is there a reason to distinquish between a connection that
>is being rejected because the listener crashed and a connection
>that is being rejected because the listener does not exist?

This only covers the case for the REQ received state, and could work for that
state.  But the problem can also occur after sending/receiving an MRA, REQ, or
REP.

- Sean