hg: jdk/jdk: 8219149: ProcessTools.ProcessBuilder should print timing info for subprocesses

[kim.barrett at oracle.com]

Changeset: 3f2f89737be5
Author:    kbarrett
Date:      2019-05-31 14:42 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/3f2f89737be5

8219149: ProcessTools.ProcessBuilder should print timing info for subprocesses
Summary: Add some timestamped logging messages to OutputBuffer.
Reviewed-by: rriggs, dcubed, lmesnik, dholmes

! test/lib/jdk/test/lib/process/OutputBuffer.java