* lisp/generic-x.el (show-tabs-tab, show-tabs-space):
Remove "-face" suffix from face names.
(show-tabs-tab-face, show-tabs-space-face):
New backward-compatibility aliases for renamed faces.
(show-tabs-generic-mode-font-lock-defaults-1)
(show-tabs-generic-mode-font-lock-defaults-2):
Use renamed show-tabs faces.