GitLab

(struct xftdraw_list, xftdraw_list): Delete them.
(register_xftdraw, check_xftdraw): Delete them.
(xftfont_prepare_face): Don't call register_xftdraw.
(xftfont_done_face): Don't call check_xftdraw.
(xftfont_draw): Get backroudn color only when with_background is
nonzero.