+ * Revision 1.11 1997-11-24 11:33:57 adam
+ * Using function odr_nullval() instead of global ODR_NULLVAL when
+ * appropriate.
+ *
+ * Revision 1.10 1997/09/29 08:58:25 adam
+ * Fixed conversion of trees so that true copy is made.
+ *
+ * Revision 1.9 1997/06/23 10:31:25 adam