[7u4] Review request for 7154480: [macosx] Not all popup menu items are visible

[Leonid Romanov]

Hi,
Release team has decided that we'd better fix 7154480 for 7u4 because of its high impact on users, so please review a fix for it. The fix prevents popups from overlapping with the Dock/menu bar on OS X, keeping the old behavior for other platforms.

Bug:  http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7154480
Webrev: http://cr.openjdk.java.net/~leonidr/7154480/webrev.00/

Thanks,
Leonid.