* lisp/faces.el (face-background-pixmap)
(set-face-background-pixmap): Make XEmacs compat aliases obsolete in
favor of 'face-stipple' and 'set-face-stipple'. Update callers.
* lisp/emacs-lisp/gv.el (face-background-pixmap): Make XEmacs
alias obsolete as a generalized variable.
(face-stipple): New generalized variable.
* doc/misc/cl.texi (Setf Extensions): Refer to above new generalized
variable instead of the obsolete one.