Changes in 2.27.3:

- Removed libglade dependency

Bugs fixed:
#584418 - gdl_dock_paned_dock does not show the requestor
#584303 – Potfiles.in broken
#580860 – Remove deprecated libgnome dependency
#582511 – Use GtkBuilder instead of libglade
#583963 – does not build with gdl 2.27.2