hg: jdk9/dev/jdk: 8176272: (process) ProcessHandle::onExit fails to wait for non-child process

[roger.riggs at oracle.com]

Changeset: 3981152d47d4
Author:    rriggs
Date:      2017-03-16 15:40 -0400
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/3981152d47d4

8176272: (process) ProcessHandle::onExit fails to wait for non-child process
Reviewed-by: chegar, stuefe

! src/java.base/share/classes/java/lang/ProcessHandleImpl.java
! src/java.base/unix/native/libjava/ProcessHandleImpl_unix.c
! test/java/lang/ProcessHandle/JavaChild.java
! test/java/lang/ProcessHandle/OnExitTest.java