as specified by AMOP.
* optimization: faster LOGCOUNT implementation on x86 and x86-64
(thanks to Lutz Euler)
+ * bug fix: improved the handling of type declarations and the
+ detection of violations for keyword arguments with non-constant
+ defaults.
changes in sbcl-0.9.15 relative to sbcl-0.9.14:
* added support for the ucs-2 external format. (contributed by Ivan