+changes in sbcl-1.0.16 relative to 1.0.15:
+ * minor incompatible change: change PROBE-FILE back to returning
+ NIL whenever we can't get a truename, as was the case before 1.0.14.
+ * enhancement: add support for fcntl's struct flock to SB-POSIX.
+
+changes in sbcl-1.0.15 relative to sbcl-1.0.14:
+ * enhancement: cleaner backtraces for interactive interrupts, as
+ well as other cases where the interesting frames used to be
+ obscured by interrupt handling frames.
+ * enhancement: untracing a whole package using (UNTRACE "FOO") is
+ now supported, and tracing a whole package using (TRACE "FOO") now
+ traces SETF-functions as well.
+ * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
+ * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
+ when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
+ * unreadably printed representation of hash-tables now includes
+ weakness if any.
+ * bug fix: partially fixed #188: type propagation from assignments
+ is now more efficient.
+ * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
+ 'DOUBLE-FLOAT) are not flushable.
+ * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
+ full address of the object, and none of the tag bits.
+ * bug fix: readably printing hash-tables now respects other printer
+ control variables. (reported by Cedric St-Jean)
+ * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
+ keyword with MAKE-HASH-TABLE.
+ * bug fix: export SB-POSIX:MKSTEMP.
+ * bug fix: SORT was not interrupt safe.
+ * bug fix: XREF accounts for the last node of each basic-block as
+ well.
+ * bug fix: MAKE-INSTANCE optimizations interacted badly with
+ non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
+ methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
+ * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
+ create obsolete instances in the case of redefinition or
+ obsoletion of a superclass. (thanks to Andy Hefner)
+ * bug fix: Support for the Alpha architecture has been revived; it had
+ suffered somewhat from lack of maintenance since sbcl-1.0.
+ * improvements to the Windows port:
+ ** The system detects the codepage to use at startup, instead of
+ using the value from the saved core. (thanks to Kei Suzuki)
+