changes in sbcl-1.2.4 relative to sbcl-1.2.3:
* enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
SEQUENCE:MERGE respectively when the specified result type designates an
extended sequence.
* bug fix: Wrong binding order of supplied-p parameters in macro lambda
lists. (lp#721135)
* bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
universal superclass (lp#1332983)
* bug fix: reading an uninterned symbol whose print name has the
syntax of an integer signals an error. (lp#310062)
* bug fix: the walker is less likely to be confused when walking LET* forms
with special bindings and use of those bindings and others of the same
name.
* bug fix: a rare bug affecting 32-bit platforms resulting in a
fatal condition with the message "Globaldb rehash failure" has been fixed.