[7u4] Request for phase 2 approval for CR 7154516: [macosx] Popup menus have no visible borders

[Dmitry Cherepanov]

Bug: http://bugs.sun.com/view_bug.do?bug_id=7154516
Webrev: http://cr.openjdk.java.net/~dcherepanov/7154516/webrev.0/
Review thread: 
http://mail.openjdk.java.net/pipermail/macosx-port-dev/2012-March/003642.html
Reviewer: Sergey Bylokhov (serb)

Rationale for inclusion in 7u4: This is a very visible problem - shadows 
don't get drawn for popup windows. Also, it's a regression from Apple's 
JDK. Low-risk fix (one-liner).

Thanks,
Dmitry