Remove container implementation, which isn't thought for handling

Remove container implementation, which isn't thought for handling

2008-06-24  Carlos Garnacho  <carlos@imendio.com>

        * gtk/gtkdialog.[ch]: Remove container implementation, which isn't
        thought for handling non-direct children. Fixes #539732.
        (gtk_dialog_pack_start) (gtk_dialog_pack_end): Removed as well, it
        doesn't provide enough control to API users (removing, reordering...),
        this is better handled through:
        (gtk_dialog_get_content_area): New function which just returns
        dialog->vbox.
        * gtk/gtk.symbols: Modify accordingly.
        * docs/reference/gtk/tmpl/gtkdialog.sgml: Update docs to recommend
        using gtk_dialog_get_[action|content]_area() instead of accessing
        dialog struct members directly.

svn path=/trunk/; revision=20680