+ * Revision 1.10 1999/12/10 23:42:04 mdw
+ * Change header file guard names.
+ *
+ * Revision 1.9 1999/08/02 16:53:48 mdw
+ * Improve type safety for sym_iter objects.
+ *
+ * Revision 1.8 1999/08/02 14:45:48 mdw
+ * Break low-level hashtable code out from sym.
+ *