+ * Revision 1.9 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 1.8 1996/02/02 13:43:52 adam
+ * The public functions simply use char instead of Dict_char to represent
+ * search strings. Dict_char is used internally only.
+ *
+ * Revision 1.7 1995/12/11 09:04:50 adam
+ * Bug fix: the lookup/scan/lookgrep didn't handle empty dictionary.
+ *
+ * Revision 1.6 1995/11/20 11:58:04 adam
+ * Support for YAZ in standard located directories, such as /usr/local/..
+ *
+ * Revision 1.5 1995/10/09 16:18:32 adam