* keyboard.c: Make symbols static if they're not exported.

* keyboard.c: Make symbols static if they're not exported.

(single_kboard, recent_keys_index, total_keys, recent_keys):
(this_command_key_count_reset, raw_keybuf, raw_keybuf_count):
(this_single_command_key_start, echoing, last_auto_save):
(read_key_sequence_cmd, dribble, recursive_edit_unwind):
(command_loop, echo_now, keyboard_init_hook, help_char_p):
(quit_throw_to_read_char, command_loop_2, top_level_1, poll_timer):
(Vlispy_mouse_stem, double_click_count):
Now static.
(force_auto_save_soon): Define only if SIGDANGER.
(ignore_mouse_drag_p): Now static if
!defined HAVE_WINDOW_SYSTEM || defined USE_GTK || defined HAVE_NS.
(print_help): Remove; unused.
(stop_character, last_timer_event): Mark as externally visible.
* keyboard.h (ignore_mouse_drag_p): Declare only if
defined HAVE_WINDOW_SYSTEM && !defined USE_GTK && !defined HAVE_NS.
(echo_now, help_char_p, quit_throw_to_read_char): Remove decls.
* lisp.h (echoing): Remove decl.
(force_auto_save_soon): Declare only if SIGDANGER.
* xdisp.c (redisplay_window): Simplify code, to make it more
obvious that ignore_mouse_drag_p is not accessed if !defined
USE_GTK && !defined HAVE_NS.