(tsm_document_id) [USE_MAC_TSM]: New variable.

(tsm_document_id) [USE_MAC_TSM]: New variable.
(Qtext_input, Qupdate_active_input_area, Qunicode_for_key_event)
[USE_MAC_TSM]: Likewise.
(syms_of_macterm) [USE_MAC_TSM]: Intern and staticpro them.
(Qbefore_string) [USE_MAC_TSM]: Add extern.
(do_app_resume, do_app_suspend) [USE_MAC_TSM]: Call
ActivateTSMDocument/DeactivateTSMDocument.
(mac_store_event_ref_as_apple_event): Call mac_post_mouse_moved_event.
(mac_handle_window_event) [USE_MAC_TSM]: Handle
kEventWindowFocusAcquired/kEventWindowFocusRelinquish.
(mac_handle_text_input_event) [USE_MAC_TSM]: New function.
(install_window_handler) [USE_MAC_TSM]: Install it.  Register
kEventWindowFocusAcquired/kEventWindowFocusRelinquish.
(keycode_to_xkeysym_table): Add entry for f16.
(XTread_socket) [USE_MAC_TSM]: Set/reset read_socket_inev
before/after passing keystroke event to toolbox dispatcher.
(init_tsm) [USE_MAC_TSM]: New function.
(mac_initialize) [USE_MAC_TSM]: Call it.
(Vmac_ts_active_input_overlay) [USE_MAC_TSM]: New defvar.