(mac_query_char_extents) [USE_ATSUI]: Don't call

(mac_query_char_extents) [USE_ATSUI]: Don't call
ATSUGetGlyphBounds if not necessary.
(Vmac_atsu_font_table) [USE_ATSUI]: Remove Variable.
(syms_of_macterm) [USE_ATSUI]: Don't defvar it.
(fm_get_style_from_font, atsu_find_font_from_family_name)
(atsu_find_font_family_name, mac_atsu_font_face_attributes)
[USE_ATSUI]: New functions.
(init_font_name_table) [USE_ATSUI]: Use atsu_find_font_family_name.
(mac_load_query_font) [USE_ATSUI]: Use atsu_find_font_from_family_name.
Don't get metrics for Latin-1 right half characters.
(mac_load_query_font): Don't load font if space width is not positive.
[TARGET_API_MAC_CARBON] (mac_store_event_ref_as_apple_event): Use
mac_wakeup_from_rne instead of mac_post_mouse_moved_event.
(XTread_socket): Call SelectWindow when unfocused frame is clicked.