[7u4] Request for phase 2 approval for CR 7147066 - [macosx] FileDialog.getDirectory() returns incorrect directory

[Dmitry Cherepanov]

CR: http://bugs.sun.com/view_bug.do?bug_id=7147066
Webrev: http://cr.openjdk.java.net/~dcherepanov/7147066/webrev.2/
Technical review: 
http://mail.openjdk.java.net/pipermail/macosx-port-dev/2012-February/003384.html

Reviewers: Anthony Petrov, Mike Swingler
Rationale for inclusion in 7u4: This is a regression introduced in a 
recent build.

Thanks,
Dmitry