Request for approval:7172149 ArrayIndexOutOfBoundsException from Signature.verify

[Jonathan Lu]

Hi all,

Here's a request of porting fix 7172149 back to JDK7, could you please 
help to review?

Bug: http://bugs.sun.com/view_bug.do?bug_id=7172149

Change set: http://hg.openjdk.java.net/jdk8/jdk8/jdk/rev/713b10821c3d

Thread where it was reviewed:
http://mail.openjdk.java.net/pipermail/security-dev/2012-May/004925.html

Thanks,
Jonathan