* minor incompatible change: the :SB-LDB feature is now enabled by
default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
the low-level debugger.
+ * bug fix: global optimization policy was not visible in LOCALLY and
+ MACROLET forms.
* bug fix: class objects can be used as specializers in methods.
(reported by Pascal Costanza)
* bug fix: native unparsing of pathnames with :DIRECTORY NIL failed