+ * 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
+ * Moved towards generic character mapping depending on "structure"
+ * field in abstract syntax file. Fixed a few memory leaks. Fixed
+ * bug with negative integers when doing searches with relational
+ * operators.
+ *
+ * Revision 1.26 1997/09/29 12:41:35 adam
+ * Fixed bug regarding USE_TIMES var.
+ *
+ * Revision 1.25 1997/09/29 09:08:36 adam
+ * Revised locking system to be thread safe for the server.
+ *
+ * Revision 1.24 1997/09/17 12:19:19 adam