** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
+ * minor incompatible change: the :NEGATIVE-ZERO-IS-NOT-ZERO feature
+ no longer has any effect, as the code controlled by this feature
+ has been deleted. (As far as we know, no-one has ever built using
+ this feature, and its semantics were confused in any case).
* SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
specified-by-AMOP lambda list of (CLASS &REST INITARGS).