1.3.13:

* Gnome::UI::Items API and code cleaned up. The invisible/duplicated toolbar icons bug has been solved.
  (Murray Cumming)
* Fixed memory errors detected by Valgrind
  (Matthew Tuck)
* Gnome::UI::Items::fill() properly implemented.
  (Tassos Bassoukos)
* examples fixed for gcc 3.2 (Murray Cumming)
