hg: code-tools/jcstress: Runners: fail gracefully when generated runner class cannot be loaded by the older JDK.

[aleksey.shipilev at oracle.com]

Changeset: 187018b03218
Author:    shade
Date:      2016-07-22 18:41 +0300
URL:       http://hg.openjdk.java.net/code-tools/jcstress/rev/187018b03218

Runners: fail gracefully when generated runner class cannot be loaded by the older JDK.

! jcstress-core/src/main/java/org/openjdk/jcstress/JCStress.java
! jcstress-core/src/main/java/org/openjdk/jcstress/util/Reflections.java