2.16.2 Stuff:

- Now support for "combo" style lists, and id values of "session"
  and "language" are supported for displaying the session/language
  lists as drop-down combos.  (Brian Cameron).  For example:

  <item type="list" id="language" combo="true">
     <pos  x="25" y="10" height="40" width="300"/>
  </item>
  <item type="list" id="session" combo="true">
    <pos x="50" y="10" height="40" width="300"/>
  </item>

- Now OK/Start Again buttons are sensitive/insensitive in a more
  sensible way for both gdmlogin and gdmgreeter (if GTK style buttons
  are used in gdmgreeter).  (Brian Cameron)

- Face Browser widget and background rectangle (for gdmgreeter) 
  is not shown if there are no users to display.  (Brian Cameron)

- Help button now enabled in gdmphotosetup.  (Matthias Clasen)

- Fix so that if timed user script returns an invalid user that
  timed login is not turned on.  (Andrew)

- Fix bug that was causing %t to be expanded improperly when
  used in the timed login label.  (Brian Cameron)

- Set authdir to NULL after freeing to avoid accessing an invalid
  pointer.  Fixes bug #359831.  (Amnon Aaronsohn)

- Leaks fixed.  (Kjartan Maraas)

- Translation updates (Abel Cheung, Priit Laes, Daniel Nylander)