[patch] make-load-form for sql-relational-exp

While writing a macro, this bit me. Here's the fix. I think.

Thanks,
Alan

--- expressions.lisp.old	2005-10-04 17:51:04.000000000 -0500
+++ expressions.lisp	2005-10-04 17:53:01.000000000 -0500
@@ -229,6 +229,11 @@
     :initform nil))
   (:documentation "An SQL relational expression."))
 
+(defmethod make-load-form ((self sql-relational-exp) &optional environment)
+  (make-load-form-saving-slots self
+			       :slot-names '(operator sub-expressions)
+			       :environment environment))
+
 (defmethod collect-table-refs ((sql sql-relational-exp))
   (let ((tabs nil))
     (dolist (exp (slot-value sql 'sub-expressions))