Review request for bug 8015762: java/nio/channels/DatagramChannel/AdaptDatagramSocket.java fails intermittently

[Eric Wang]

Hi,

Please help to review the fix below for bug 
https://jbs.oracle.com/bugs/browse/JDK-8015762.
http://cr.openjdk.java.net/~ewang/8015762/webrev.00/

The test AdaptDatagramSocket fails intermittently as it runs depended on 
thread schedule. The fix to adjust the thread priority and sleep time to 
make the test more stable.

Thanks,
Eric