+ * Revision 1.16 1998-01-29 13:38:17 adam
+ * Fixed problem with mapping to record with unknown schema.
+ *
+ * Revision 1.15 1998/01/26 10:37:57 adam
+ * Better diagnostics.
+ *
+ * Revision 1.14 1997/11/06 11:41:01 adam
+ * Implemented "begin variant" for the sgml.regx filter.
+ *
+ * Revision 1.13 1997/10/31 12:35:44 adam
+ * Added a few log statements.
+ *
+ * Revision 1.12 1997/10/29 12:02:22 adam
+ * Using oid_ent_to_oid used instead of the non thread-safe oid_getoidbyent.
+ *
+ * Revision 1.11 1997/10/27 14:34:00 adam
+ * Work on generic character mapping depending on "structure" field
+ * in abstract syntax file.
+ *
+ * Revision 1.10 1997/09/18 08:59:21 adam
+ * Extra generic handle for the character mapping routines.
+ *
+ * Revision 1.9 1997/09/17 12:19:21 adam
+ * Zebra version corresponds to YAZ version 1.4.
+ * Changed Zebra server so that it doesn't depend on global common_resource.
+ *
+ * Revision 1.8 1997/09/09 13:38:14 adam
+ * Partial port to WIN95/NT.
+ *
+ * Revision 1.7 1997/09/05 15:30:10 adam
+ * Changed prototype for chr_map_input - added const.
+ * Added support for C++, headers uses extern "C" for public definitions.
+ *
+ * Revision 1.6 1997/09/04 13:54:40 adam
+ * Added MARC filter - type grs.marc.<syntax> where syntax refers
+ * to abstract syntax. New method tellf in retrieve/extract method.
+ *
+ * Revision 1.5 1997/07/15 16:29:03 adam
+ * Initialized dummy variable to keep checker gcc happy.
+ *
+ * Revision 1.4 1997/04/30 08:56:08 quinn
+ * null
+ *
+ * Revision 1.2 1996/10/11 16:06:43 quinn
+ * Revision 1.3 1997/02/24 10:41:50 adam