RFR 9: 8077350 Process API Updates Implementation Review

[Roger Riggs]

Please review the API and implementation of the Process API Updates
described inJEP 102 <https://bugs.openjdk.java.net/browse/JDK-8046092>. 
Please  review and comment by April 23rd.

The recommendation to make ProcessHandle an interface is included
allowing the new functions to be extended by Process subclasses.
The implementation covers all functions on Unix, Windows, Solaris, and 
Mac OS X.

The API doc: http://cr.openjdk.java.net/~rriggs/ph-apidraft/

The webrev: http://cr.openjdk.java.net/~rriggs/webrev-ph

Issue: JDK-8077350 <https://bugs.openjdk.java.net/browse/JDK-8077350> 
Process API Updates Implementation

The code is in the jdk9 sandbox on branch JDK-8046092-branch.

Please review and comment, Roger