(it_props): Move the entry for Qauto_composed to just

(it_props): Move the entry for Qauto_composed to just
before the entry for Qcompostion.
(handle_auto_composed_prop): Call auto-composition-function with 4
args.
(handle_composition_prop) [USE_FONT_BACKEND]: Set it->face_id from
the font in gstring.
(fill_composite_glyph_string): Check LGLYPH_FORM (g) to detect the
end of valid glyph.
(x_produce_glyphs): Don't update it->face_id if we are composing
with gstring.