+ * Revision 1.28 1999-03-02 16:15:42 quinn
+ * Added "tagsysno" and "tagrank" directives to zebra.cfg.
+ *
+ * Revision 1.27 1998/10/16 08:14:28 adam
+ * Updated record control system.
+ *
+ * Revision 1.26 1998/05/20 10:12:12 adam
+ * Implemented automatic EXPLAIN database maintenance.
+ * Modified Zebra to work with ASN.1 compiled version of YAZ.
+ *
+ * Revision 1.25 1998/03/11 11:19:04 adam
+ * Changed the way sequence numbers are generated.
+ *
+ * Revision 1.24 1998/03/05 08:38:46 adam
+ * New member recordSize in recRetrieveCtrl.
+ *
+ * Revision 1.23 1998/02/10 12:03:05 adam
+ * Implemented Sort.
+ *
+ * Revision 1.22 1997/10/27 14:33:04 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 1.21 1997/09/18 08:59:19 adam
+ * Extra generic handle for the character mapping routines.
+ *
+ * Revision 1.20 1997/09/17 12:19:10 adam
+ * Zebra version corresponds to YAZ version 1.4.
+ * Changed Zebra server so that it doesn't depend on global common_resource.
+ *
+ * Revision 1.19 1997/09/05 15:30:02 adam
+ * Changed prototype for chr_map_input - added const.
+ * Added support for C++, headers uses extern "C" for public definitions.
+ *
+ * Revision 1.18 1997/09/04 13:56:15 adam
+ * Added new filter grs.marc.<syntax> where <syntax> refers to
+ * abstract syntax. New method tellf in extract/retrieve control
+ * block.
+ *
+ * Revision 1.17 1997/04/30 08:56:04 quinn
+ * null
+ *
+ * Revision 1.16 1996/10/11 10:56:25 adam
+ * New module recctrl. Used to manage records (extract/retrieval).
+ * All record types are accessed by means of definitions in recctrl.h.
+ *
+ * Revision 1.15 1996/06/06 12:08:16 quinn
+ * Added showRecord Group entry
+ *
+ * Revision 1.14 1996/05/09 07:28:49 quinn
+ * Work towards phrases and multiple registers
+ *
+ * Revision 1.13 1996/05/01 13:44:05 adam
+ * Added seek function to the recExtractCtrl and recRetrieveCtrl control
+ * structures. Added end-of-file indicator function and start offset to
+ * recExtractCtrl.
+ *
+ * Revision 1.12 1996/01/17 15:01:25 adam
+ * Prototype changed for reader functions in extract/retrieve. File
+ * is identified by 'void *' instead of 'int'.
+ *
+ * Revision 1.11 1995/12/04 14:20:54 adam
+ * Extra arg to recType_byName.
+ *
+ * Revision 1.10 1995/10/16 14:03:06 quinn
+ * Changes to support element set names and espec1
+ *
+ * Revision 1.9 1995/10/06 14:37:53 adam