+ * bug fix: getting the order of arguments to
+ SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
+ rather than a failed AVER. (reported by Paul Nathan)
+ * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
+ arguments during copying on x86 and x86-64; it may still happen on other
+ platforms when there are more fixed arguments than stack slots.
+ (reported by Jan Moringen)
+