+ * Revision 1.9 1997-12-18 10:54:25 adam
+ * New method result set method rs_hits that returns the number of
+ * hits in result-set (if known). The ranked result set returns real
+ * number of hits but only when not combined with other operands.
+ *
+ * Revision 1.8 1996/10/29 13:55:24 adam
+ * Include of zebrautl.h instead of alexutil.h.
+ *
+ * Revision 1.7 1995/12/11 09:15:25 adam
+ * New set types: sand/sor/snot - ranked versions of and/or/not in
+ * ranked/semi-ranked result sets.
+ * Note: the snot not finished yet.
+ * New rset member: flag.
+ * Bug fix: r_delete in rsrel.c did free bad memory block.
+ *
+ * Revision 1.6 1995/10/12 12:41:57 adam
+ * Private info (buf) moved from struct rset_control to struct rset.
+ * Bug fixes in relevance.
+ *
+ * Revision 1.5 1995/10/10 14:00:04 adam
+ * Function rset_open changed its wflag parameter to general flags.
+ *
+ * Revision 1.4 1995/10/06 14:38:06 adam