sbcl-1.3.9 released

Dear all,

I've released SBCL 1.3.9, and uploaded a source tarball to Sourceforge.
The month in development was fairly quiet, as suggested by the fairly
minimal user-visible changes, appended below.

Best wishes,

Christophe

changes in sbcl-1.3.9 relative to sbcl-1.3.8:
  * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
    instead of (ARRAY CHARACTER (*)) when possible.
  * enhancement: cached make-instance/allocate-instance constructors can now
    get garbage collected. 
  * optimization: better performance for some unoptimized operations on
    complex numbers.
  * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
    DEFPACKAGE form no longer signals a bogus error


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