(ps-xemacs-color-name, ps-xemacs-face-kind-p): Only

(ps-xemacs-color-name, ps-xemacs-face-kind-p): Only
do work for XEmacs.
(ps-xemacs-mapper): Rename from ps-mapper, only work on XEmacs.
(ps-xemacs-extent-sorter): Rename from ps-extent-sorter, only work
on XEmacs.
(ps-x-color-instance-p, ps-x-color-instance-rgb-components)
(ps-x-color-name, ps-x-color-specifier-p)
(ps-x-copy-coding-system, ps-x-device-class)
(ps-x-extent-end-position, ps-x-extent-face)
(ps-x-extent-priority, ps-x-extent-start-position)
(ps-x-face-font-instance, ps-x-find-coding-system)
(ps-x-font-instance-properties, ps-x-make-color-instance)
(ps-x-map-extents, ps-e-face-bold-p, ps-e-face-italic-p)
(ps-e-next-overlay-change, ps-e-overlays-at, ps-e-overlay-get)
(ps-e-overlay-end, ps-e-x-color-values, ps-e-color-values):
(ps-generate-postscript-with-faces): Delete defaliases.
(ps-face-foreground-name, ps-face-background-name)
(ps-color-values, ps-face-bold-p, ps-face-italic-p): Move
definitions to top level, make the body conditional on the emacs
flavor. Replace uses of deleted aliases and renamed functions.
(ps-generate-postscript-with-faces, ps-color-device): Replace uses
of deleted aliases and renamed functions.