Description of problem:

When exporting part of an LDAP tree into an LDIF file from the browser, the
"export items" window opens. The user can enter the filename into the output
filename box, however there's a button next to this which should open a file
dialog so that the user can browse to a location to save the file. This does not
work.

Version-Release number of selected component (if applicable):
luma-2.3-8.fc6


Steps to Reproduce:
1. Open luma, and go to the browser plugin
2. Press right mouse button on an arbitrary part of the ldap tree
3. Choose "export" export->subtree for example
4. Press the button next to the "Out file" text box
  
Actual results:

No file dialog opens.

Expected results:

A file dialog should open, allowing the user to browse to a location and choose
a filename.

Additional info: