(mac_create_bitmap_from_bitmap_data): Make variable

(mac_create_bitmap_from_bitmap_data): Make variable
`swap_nibbles' static const.
(atsu_get_text_layout_with_text_ptr): Make variables `lengths',
`tags', `sizes', `values' static const.
(mac_draw_string_common): Make variables `context' static.  Make
variables `tags', `sizes', and `values' static const.
(pcm_get_status, x_detect_focus_change, x_scroll_bar_handle_click)
(xlfdpat_create, xlfdpat_block_match_1, xlfdpat_match)
(mac_to_x_fontname, parse_x_font_name, add_mac_font_name)
(mac_do_list_fonts, is_fully_specified_xlfd, do_grow_window)
(mac_store_event_ref_as_apple_event, mac_make_rdb): Add const
qualifier to arguments.
(xlfd_scalable_fields, keycode_to_xkeysym_table)
(fn_keycode_to_keycode_table): Make static const.
(mac_load_query_font): Make variables `tags', `sizes', `values',
`types', and `selectors' static const.
(mac_handle_command_event, mac_handle_window_event): Make
variables `names' and `types' static const.
(init_command_handler, install_window_handler): Make variables
`specs*' static const.
(mac_handle_font_event, mac_handle_text_input_event)
(mac_store_service_event): Make variables `names' and `types'
const.  Make variables `names_*' and `types_*' static const.