(xftfont_list): Adjusted for the change of `list'

(xftfont_list): Adjusted for the change of `list'
callback function.
(xftfont_match): Adjusted for the fontmat change of font-entity.
(xftfont_open): Adjusted for the format change of font-entity and
font-object.  Adjusted for the change of struct font.  Return a
font-object.  Don't update dpyinfo->smallest_font_height and
dpyinfo->smallest_char_width.
(xftfont_close): Block input while calling XftFontClose.
(xftfont_prepare_face): Don't block input while calling
xftfont_get_colors.  Adjusted for the change of struct font.
(xftfont_shape): Return value of error case fixed.