* xterm.h (struct scroll_bar): Only use Lisp_Object for lisp data.

* xterm.h (struct scroll_bar): Only use Lisp_Object for lisp data.
Turn integer fields into `int'.  Merge x_window_low and x_window_high.
(SCROLL_BAR_PACK, SCROLL_BAR_UNPACK, SCROLL_BAR_X_WINDOW)
(SET_SCROLL_BAR_X_WINDOW): Remove.
(SCROLL_BAR_X_WIDGET, SET_SCROLL_BAR_X_WIDGET):
Access the new x_window field directly.
* xterm.c (x_scroll_bar_create): Use a pseudovector.
Don't wrap/unwrap integers into Lisp_Objects.
(XTset_vertical_scroll_bar, x_scroll_bar_handle_click)
(x_scroll_bar_report_motion):
Don't wrap/unwrap integers into Lisp_Objects.
(x_term_init): Use SDATA.
(x_window_to_scroll_bar, x_create_toolkit_scroll_bar)
(x_scroll_bar_set_handle, x_scroll_bar_remove)
(XTset_vertical_scroll_bar, x_scroll_bar_expose)
(x_scroll_bar_report_motion, x_scroll_bar_clear):
* xfns.c (x_set_background_color):
* gtkutil.c (xg_create_scroll_bar, xg_set_toolkit_scroll_bar_thumb):
Access the new x_window field directly.