* gtk/gtk-docs.sgml: Go back to DocBook 3.0 to get the
autobuilder on developer.gnome.org back to work, but add
the png notation for the stock icons.
* gtk/gtk-docs.sgml: Go back to DocBook 3.0 to get the
autobuilder on developer.gnome.org back to work, but add
the png notation for the stock icons.