Bug#535305: Reverting to old function fixes the problem

[Fredrik Tolf]

For what it's worth, I managed to fix the problem by
changing /usr/share/common-lisp/source/common-lisp-controller/post-sysdef-install.lisp so that the line, in the GET-OWNER-AND-MODE function as defined for SBCL, which, in the new version of c-l-c (6.18), reads
  (sb-impl::native-file-kind (namestring directory)))
instead reads
  (sb-unix:unix-file-kind (namestring directory)))
as was the case in the previous version (6.17).

Maybe this change had to happen because of some newer version of SBCL in
unstable?

What I'm not getting is how this slipped past the HANDLER-CASE form
in /usr/lib/sbcl/install-clc.lisp.