(def-frob %funcallable-instance-layout)
(def-frob %funcallable-instance-lexenv)
(def-frob %set-funcallable-instance-fun (fin new-val)))
(def-frob %funcallable-instance-layout)
(def-frob %funcallable-instance-lexenv)
(def-frob %set-funcallable-instance-fun (fin new-val)))