Unify mouse-highlight code for all GUI and TTY sessions.

Unify mouse-highlight code for all GUI and TTY sessions.

 term.c: Remove static mouse_face_* variables.  All users
 changed.
 (term_show_mouse_face, term_clear_mouse_face)
 (fast_find_position, term_mouse_highlight): Functions deleted.
 (tty_draw_row_with_mouse_face): New function.
 (term_mouse_movement): Call note_mouse_highlight instead of
 term_mouse_highlight.
 nsterm.m (ns_update_window_begin, ns_update_window_end)
 (ns_update_end, x_destroy_window, ns_frame_up_to_date)
 (ns_dumpglyphs_box_or_relief, ns_maybe_dumpglyphs_background)
 (ns_dumpglyphs_image, ns_dumpglyphs_stretch)
 (ns_initialize_display_info, keyDown, mouseMoved, mouseExited):
 Replace Display_Info with Mouse_HLInfo everywhere where
 mouse_face_* members were accessed for mouse highlight purposes.
 xterm.c (x_update_window_begin, x_update_window_end)
 (x_update_end, XTframe_up_to_date, x_set_mouse_face_gc)
 (handle_one_xevent, x_free_frame_resources, x_term_init): Replace
 Display_Info with Mouse_HLInfo everywhere where mouse_face_*
 members were accessed for mouse highlight purposes.
 w32term.c (x_update_window_begin, x_update_window_end)
 (x_update_end, w32_read_socket, x_free_frame_resources)
 (w32_initialize_display_info): Replace Display_Info with
 Mouse_HLInfo everywhere where mouse_face_* members were accessed
 for mouse highlight purposes.
 xdisp.c (show_mouse_face, note_mode_line_or_margin_highlight)
 (note_mouse_highlight) [HAVE_WINDOW_SYSTEM]: Don't run GUI code
 unless the frame is on a window-system.
 (get_tool_bar_item, handle_tool_bar_click)
 (note_tool_bar_highlight, draw_glyphs, erase_phys_cursor)
 (show_mouse_face, clear_mouse_face, coords_in_mouse_face_p)
 (note_mode_line_or_margin_highlight, note_mouse_highlight)
 (x_clear_window_mouse_face, cancel_mouse_face, expose_frame):
 Replace Display_Info with Mouse_HLInfo everywhere where
 mouse_face_* members were accessed for mouse highlight purposes.
 (coords_in_mouse_face_p): Move prototype out of the
 HAVE_WINDOW_SYSTEM conditional.
 (x_y_to_hpos_vpos, frame_to_window_pixel_xy): Move out of the
 HAVE_WINDOW_SYSTEM block.
 (try_window_id) [HAVE_GPM || MSDOS]: Call
 x_clear_window_mouse_face.
 (draw_row_with_mouse_face): Implementation for HAVE_WINDOW_SYSTEM
 systems.  Call tty_draw_row_with_mouse_face for TTY systems.
 (show_mouse_face): Call draw_row_with_mouse_face, instead of
 calling draw_glyphs directly.
 (show_mouse_face, clear_mouse_face, coords_in_mouse_face_p)
 (cursor_in_mouse_face_p, rows_from_pos_range)
 (mouse_face_from_buffer_pos, mouse_face_from_string_pos)
 (note_mode_line_or_margin_highlight, note_mouse_highlight)
 (x_clear_window_mouse_face, cancel_mouse_face): Move out of the
 HAVE_WINDOW_SYSTEM block.  Ifdef away window-system specific
 fragments.
 (note_mouse_highlight): Call popup_activated for MSDOS as well.
 Clear mouse highlight if pointer is over glyphs whose OBJECT is an
 integer.
 (mouse_face_from_buffer_pos): Add parentheses around && within ||.
 (x_consider_frame_title, tool_bar_lines_needed): Move
 prototypes to HAVE_WINDOW_SYSTEM-only part.
 (get_window_cursor_type): Move inside a HAVE_WINDOW_SYSTEM-only
 part.  Remove "#ifdef HAVE_WINDOW_SYSTEM" from body of function.
 (null_glyph_slice): Move declaration into HAVE_WINDOW_SYSTEM-only
 part.
 dispnew.c (mirror_make_current): Set Y coordinate of the
 mode-line and header-line rows.
 (init_display): Setup initial frame's output_data for text
 terminal frames.
 xmenu.c (popup_activated): Don't define on MSDOS, which now has
 its own definition on msdos.c.
 msdos.c (show_mouse_face, clear_mouse_face)
 (fast_find_position, IT_note_mode_line_highlight)
 (IT_note_mouse_highlight): Functions deleted.
 (IT_frame_up_to_date, dos_rawgetc): Call note_mouse_highlight
 instead of IT_note_mouse_highlight.
 (draw_row_with_mouse_face, popup_activated): New functions.
 (dos_set_window_size, draw_row_with_mouse_face, IT_update_begin)
 (IT_update_end, IT_frame_up_to_date, internal_terminal_init)
 (dos_rawgetc): Replace Display_Info with Mouse_HLInfo everywhere
 where mouse_face_* members were accessed for mouse highlight
 purposes.
 msdos.h (initialize_msdos_display): Add prototype.
 frame.h (MOUSE_HL_INFO): New macro.
 lisp.h (Mouse_HLInfo): New data type.
 xterm.h (struct x_display_info):
 w32term.h (struct w32_display_info):
 nsterm.h (struct ns_display_info):
 termchar.h (struct tty_display_info): Use it instead of
 mouse_face_* members.
 dispextern.h (show_mouse_face, clear_mouse_face): Update type of
 1st argument.
 (frame_to_window_pixel_xy, note_mouse_highlight)
 (x_clear_window_mouse_face, cancel_mouse_face, clear_mouse_face)
 (show_mouse_face, cursor_in_mouse_face_p): Move prototypes out of
 HAVE_WINDOW_SYSTEM conditional.
 (draw_row_with_mouse_face): Declare prototype.
 (tty_draw_row_with_mouse_face): Declare prototype.