+ * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
+ arguments, making compiler-macros for SETF-functions able to inspect
+ their constant arguments.
+ * optimization: CHAR-CODE type derivation has been improved, making
+ TYPEP elimination on subtypes of CHARACTER work better. (reported
+ by Tobias Rittweiler, patch by Paul Khuong)
+