adding rsockets support into JDK

[Alan Bateman]

On 08/01/2019 14:18, Chris Hegarty wrote:
> I believe that the following changes fully implement the emulation:
>
> http://cr.openjdk.java.net/~chegar/rsocket/webrev.26.1/
>
Good, this aligns with what I was expecting and makes it a lot simpler 
to have all blocking operations emulated in RdmaSocketChannelImpl rather 
some in the java code, and some in the RDMA lib. So I think we have a 
good approach for this part.

-Alan