(mac_begin_cg_clip): New arg F. Call SetPortWindowPort.

(mac_begin_cg_clip): New arg F.  Call SetPortWindowPort.
All callers changed so as not to call SetPortWindowPort.
(mac_begin_cg_clip) [USE_CG_DRAWING]: Call mac_prepare_for_quickdraw.
(mac_draw_image_string_atsui) [USE_ATSUI]: New function created from
mac_draw_string_common.
(mac_draw_image_string_qd): Likewise.
(mac_draw_string_common): Use them.  Add INLINE.
(XTmouse_position, x_scroll_bar_report_motion) [TARGET_API_MAC_CARBON]:
Use FRAME_OUTER_TO_INNER_DIFF_X, FRAME_OUTER_TO_INNER_DIFF_Y, and
GetGlobalMouse.
(x_set_mouse_pixel_position) [MAC_OSX]: Use FRAME_OUTER_TO_INNER_DIFF_X
and FRAME_OUTER_TO_INNER_DIFF_Y.
[TARGET_API_MAC_CARBON] (mac_handle_mouse_event): Likewise.
[USE_MAC_TSM] (mac_handle_text_input_event): Likewise.
(x_make_frame_visible) [TARGET_API_MAC_CARBON]: Move code for
repositioning window to mac_handle_window_event.
(x_make_frame_invisible) [TARGET_API_MAC_CARBON]: Move code for
saving window location to mac_handle_window_event
[USE_MAC_FONT_PANEL] (mac_show_hide_font_panel): Install handler here.
(install_menu_target_item_handler): Remove argument in extern.
[TARGET_API_MAC_CARBON] (mac_event_to_emacs_modifiers):
Also accept command events.
(do_keystroke): New function created from XTread_socket.
(init_command_handler): Remove functions.
[TARGET_API_MAC_CARBON] (mac_handle_window_event): Reposition window
and save window location by kEventWindowShowing and kEventWindowHiding
handlers here.  Don't call next handler for window state change and
focus events.
(mac_handle_application_event, mac_handle_keyboard_event)
[TARGET_API_MAC_CARBON]: New functions.
(install_window_handler) [TARGET_API_MAC_CARBON]: Register handlers for
kEventWindowShowing and kEventWindowHiding events.  Move installation
of mouse, font, text input and menu target item handlers to
install_application_handler.
(install_application_handler) [TARGET_API_MAC_CARBON]: New function.
(mac_handle_cg_display_reconfig) [MAC_OS_X_VERSION_MAX_ALLOWED >= 1030]:
New function.
(init_dm_notification_handler) [MAC_OS_X_VERSION_MAX_ALLOWED >= 1030]:
Register it.
(XTread_socket) [TARGET_API_MAC_CARBON]: Consolidate
SendEventToEventTarget calls.  Use FRAME_OUTER_TO_INNER_DIFF_X and
FRAME_OUTER_TO_INNER_DIFF_Y.  Move application activation handler
to mac_handle_application_event.  Move keyboard handler to
mac_handle_keyboard_event.
(XTread_socket) [!TARGET_API_MAC_CARBON]: Use do_keystroke.
(mac_initialize) [TARGET_API_MAC_CARBON]: Don't call
init_command_handler.  Call install_application_handler.