hg: code-tools/jcstress: 7902109: UX: Add description to failure message if it is available

[ashipile at redhat.com]

Changeset: 32d7d4da95be
Author:    shade
Date:      2018-01-25 12:35 +0100
URL:       http://hg.openjdk.java.net/code-tools/jcstress/rev/32d7d4da95be

7902109: UX: Add description to failure message if it is available
Contributed-by: Ivan Sopov <sopov.ivan at gmail.com>

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