[7u] Request for approval for 8002313: jdk/test/java/security/Security/ClassLoaderDeadlock/ClassLoaderDeadlock.java should run in headless mode

[Jason Uh]

Requesting approval to push the following change to jdk7u:
webrev: http://cr.openjdk.java.net/~juh/8002313/webrev.00/
bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8002313
This fix was introduced into JKD8 with other changes as a part of the 
initial Mac OS X port changeset:
http://hg.openjdk.java.net/jdk8/tl/jdk/rev/d45bc4307996

Review: 
http://mail.openjdk.java.net/pipermail/security-dev/2013-January/006549.html
Reviewed by: mullan