+16 Jul 2004 Marcus Pearce <m.t.pearce@city.ac.uk>
+ * sql/oodml.lisp: on Lispworks, use weak valued hash tables for
+ object caching.
+ * sql/expressions.lisp: Fix SQL generation for the symbol NIL.
+
16 Jul 2004 Marcus Pearce <m.t.pearce@city.ac.uk>
* sql/expressions.lisp: reactivate caching of generated SQL strings.
Move methods for DATABASE-OUTPUT-SQL, OUTPUT-SQL and SQL-HASH-KEY