changes in sbcl-1.4.7 relative to sbcl-1.4.6:
* enhancement: better handling of unknown keyword arguments (lp#1750466)
* enhancement: namestrings can now be computed for certain pathnames that
previously did not have namestrings because of #\. characters in their
name and/or type components.
* bug fix: compiling a SLEEP call with a float positive infinity argument no
longer causes an internal error (lp#1754081)
* bug fix: keyword arguments provided to a generic function with
EQL-specialized methods are checked more correctly (reported by Syll,
lp#1760987)