+ * bug fix: contribs couldn't be built on Windows with MinGW.
+ * bug fix: Better pathname handling on Windows. (lp#922117)
+ * bug fix: OPEN reports a more meaningful error when an existing file is
+ opened for output with :if-exists :new-version. Thanks to Philip
+ 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.