adding rsockets support into JDK

[Chris Hegarty]

Lucy,

On 28/01/2019 18:16, Lu, Yingqi wrote:
> ...as Alan mentioned, there is a non-Linux failure on the current sandbox 
repo. I am going to take a look on Windows and see if I can duplicate it.

Found and fixed already :-)

 >>    "rsocket-branch: fix null arg checking in factories"
 >>    http://hg.openjdk.java.net/jdk/sandbox/rev/7f1b415bfede

It resulted in the Exceptions.java test failing on non-Linux.

-Chris.