* gtkutil.h (xg_update_scrollbar_pos): Remove arguments real_left

* gtkutil.h (xg_update_scrollbar_pos): Remove arguments real_left
and canon_width.
(xg_frame_cleared): Removed.

* gtkutil.c (xg_frame_cleared, xg_fixed_handle_expose,
xg_find_top_left_in_fixed): Removed.
(xg_create_scroll_bar): Put an event box widget between
the scroll bar widget and the edit widget.
(xg_show_scroll_bar): Show the parent widget (the event box).
(xg_remove_scroll_bar): Destroy parent (the event box) also.
(xg_update_scrollbar_pos): Remove arguments real_left and canon_width.
Move the parent (the event box) widget inside the fixed widget.
Move window clear to xterm.c.

* gtkutil.h (xg_frame_cleared): Removed.

* xterm.c (x_clear_frame): Remove call to xg_frame_cleared
(x_scroll_bar_create, XTset_vertical_scroll_bar): Remove
arguments left and width to xg_update_scrollbar_pos.
(XTset_vertical_scroll_bar): Do x_clear_area for USE_GTK also.