GTK L&F: "Rename File" button function does not work in unix

The "Rename File" button in FileChooser Demo in SwingSet2 demo does not work in GTK L&F. This bug happens on all the unix platforms.

STEP TO REPRODUCE:
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1. install j2sdk1.5.0 b29
2. launch SwingSet2 demo
3. Go to "Look & Feel" -> "GTK Style Look & Feel"
4. Go to "FileChooser Demo" -> "Show Plain JFileChooser"
5. Trying to change the file name by highlighting the target file name, and click on "Rename File" button, update the new file name, click on "ok" button.
6. Check to see if the renamed file name is created or not. You can see the rename file name is not created.
###@###.### 2003-11-19