Under Darwin, the Lisp kernel now tries to reserve a little less
than 2GB for heap expansion (the previous limit was 1GB). A
new reader macro (#?) was provided to simplify access to
foreign variables. A number of bugfixes were made: the generic
function COMPUTE-CLASS-PRECEDENCE-LIST is now
defined, foreign threads now establish thread-specific special
variable bindings correctly, Lisp slots on ObjC objects now
have their INITFORMs processed correctly, and ACOS and
ASIN accept arguments of type COMPLEX. FASL files will
have to be recompiled.