added a GNode test.

added a GNode test.

Fri Jul 31 22:17:05 1998  Tim Janik  <timj@gtk.org>

        * testglib.c (g_node_test): added a GNode test.

Fri Jul 31 09:08:16 1998  Tim Janik  <timj@gtk.org>

        * Makefile.am: compile gnode.c.

        * glib.h:
        * gnode.c: added implementation of n-way trees.

        * gtree.c (g_tree_traverse): added a warning to the switch() statement
        which says that G_LEVEL_ORDER is not implemented.