changes relative to sbcl-1.0.58:
* enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
source annotation of DISASSEMBLE output. Defaults to T.
+ * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
+ WAIT-P argument added to WITH-RECURSIVE-LOCK.
* enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
on list heads.
* optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer