[7u] Request for approval: 8012044 - Give more information about self-suppression from Throwable.addSuppressed

[Rob McKenna]

Hi folks,

Straight backport from 8:

Bug: bugs.sun.com/bugdatabase/view_bug.do?bug_id=8012044
Review thread: 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-April/015947.html
Changeset: http://hg.openjdk.java.net/jdk8/jdk8/jdk/rev/4da1d43f5843

Thanks,

     -Rob