[7u6] Request for approval: 7080109 Dialog.show() lacks doPrivileged() to access system event queue

[Sergey Bylokhov]

Hi Everyone,
This is a direct back port from jdk 8 to jdk 7u6.

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7080109**
jdk8 changeset: http://hg.openjdk.java.net/jdk8/awt/jdk/rev/912e666b4e1d
Webrev can be found at: http://cr.openjdk.java.net/~serb/7080109/webrev.01/
Technical review: 
http://mail.openjdk.java.net/pipermail/awt-dev/2012-May/002763.html
Reviewers: Anthony Petrov, Artem Ananiev

-- 
Best regards, Sergey.