+ * Revision 1.37 1998-09-02 13:53:22 adam
+ * Extra parameter decode added to search routines to implement
+ * persistent queries.
+ *
+ * Revision 1.36 1998/06/24 12:16:16 adam
+ * Support for relations on text operands. Open range support in
+ * DFA module (i.e. [-j], [g-]).
+ *
+ * Revision 1.35 1998/06/23 15:33:35 adam
+ * Added feature to specify sort criteria in query (type 7 specifies
+ * sort flags).
+ *
+ * Revision 1.34 1998/06/22 11:36:50 adam
+ * Added authentication check facility to zebra.
+ *
+ * Revision 1.33 1998/06/12 12:22:14 adam
+ * Work on Zebra API.
+ *
+ * Revision 1.32 1998/05/27 16:57:47 adam
+ * Zebra returns surrogate diagnostic for single records when
+ * appropriate.
+ *
+ * Revision 1.31 1998/05/20 10:12:23 adam
+ * Implemented automatic EXPLAIN database maintenance.
+ * Modified Zebra to work with ASN.1 compiled version of YAZ.
+ *
+ * Revision 1.30 1998/03/05 08:45:13 adam
+ * New result set model and modular ranking system. Moved towards
+ * descent server API. System information stored as "SGML" records.
+ *
+ * Revision 1.29 1998/02/10 12:03:06 adam
+ * Implemented Sort.
+ *
+ * Revision 1.28 1998/01/29 13:40:11 adam
+ * Better logging for scan service.
+ *
+ * Revision 1.27 1997/10/27 14:33:06 adam