Munksgaard. (lp#455381)
* bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
CLOS-related errors. (lp#633911)
+ * bug fix: GC deadlocks caused by concurrent consing on Windows.
changes in sbcl-1.1.13 relative to sbcl-1.1.12:
* optimization: better distribution of SXHASH over small conses of related