changed to return a gboolean (gtk_ctree_insert_gnode): new function for

changed to return a gboolean (gtk_ctree_insert_gnode): new function for

Wed Aug  5 02:57:20 1998  Lars Hamann  <lars@gtk.org>

        * gtk/gtkctree.h:
        * gtk/gtkctree.c:
        (gtk_ctree_find): changed to return a gboolean
        (gtk_ctree_insert_gnode): new function for recursive insertion of a
        GNode tree.
        (gtk_ctree_real_select_recursive): fix for extended selection
        (gtk_ctree_sort_recursive): in case node == NULL, sort root nodes too.
        (gtk_ctree_set_node_info) (set_node_info): few fixes for expanded flag