Changes that bring CLASH up to extended HTTP/1.0 support:

Added response-initargs and entity-initargs fields to the clash-error
conditions, so that signallers can return additional information to
the client regarding errors.

src/main/conditions.cl

@@ -31,7 +31,11 @@
 	 :documentation
 	 #+NIL
 	 "HTTP status code that might be returned to the client, if
-this makes sense."))
+this makes sense.")
+   (response-initargs :initarg :response-initargs :initform nil
+		      :reader clash-error-response-initargs)
+   (entity-initargs :initarg :entity-initargs :initform nil
+		    :reader clash-error-entity-initargs))
   (:report report-clash-error))
 
 (define-condition simple-clash-error (simple-condition clash-error)