hg: code-tools/jcstress: Runners: filter out WhiteBox warning messages from VM messages.

[ashipile at redhat.com]

Changeset: 474614a894d4
Author:    shade
Date:      2016-10-31 17:52 +0100
URL:       http://hg.openjdk.java.net/code-tools/jcstress/rev/474614a894d4

Runners: filter out WhiteBox warning messages from VM messages.

! jcstress-core/src/main/java/org/openjdk/jcstress/infra/grading/ReportUtils.java