use-default-ascent.
Fill background in advance if font has
non-zero _MULE_BASELINE_OFFSET property.
(x_load_font, x_term_init): Handle font property _MULE_DEFAULT_ASCENT.
(PER_CHAR_METRIC): New macro.
(dumpglyphs): New argument CMPCHARP. Handle multibyte characters.
(XTwrite_glyphs, redraw_previous_char, redraw_following_char):
Supply argument CMPCHARP to dumpglyphs.
(dumprectangle): Display whole glyph of wide-column characters.
Supply argument CMPCHARP to dumpglyphs.
(show_mouse_face): Supply argument CMPCHARP to dumpglyphs.
(x_draw_box): Pay attention to wide-column characters.
(x_draw_single_glyph): Supply argument CMPCHARP to dumpglyphs.
(x_new_font): Call fs_load_font for actual font loading work.
(x_new_fontset): New function.
(x_get_font_info, x_list_fonts, x_load_font, x_query_font): New
functions providing API to fontset handler.
(x_term_init): Initialize several new members of struct x_display_info.
(clear_cursor, x_display_bar_cursor, x_display_box_cursor)
(x_set_window_size): Use phys_cursor_on field in frame.
(x_update_cursor): Negative phys_cursor_x no longer means anything.
(x_scroll_bar_expose): Use VERTICAL_SCROLL_BAR_WIDTH_TRIM.
(XTchange_line_highlight, dumpglyphs, XTclear_end_of_line)
(do_line_dance, pixel_to_glyph_coords): Use FRAME_WINDOW_WIDTH.
(x_scroll_bar_move, x_scroll_bar_create):
Add a border around the actual window.
(x_scroll_bar_expose): Don't trim the width here.
and VERTICAL_SCROLL_BAR_TOP_RANGE.
(XTclear_end_of_line): Shift end-of-line when there is a
left-side scroll bar by FRAME_LEFT_SCROLL_BAR_WIDTH.
(do_line_dance): Take into account the width of a left-side scroll bar.
(dumprectangle): Trim at FRAME_EXTERNAL_WIDTH instead of FRAME_WIDTH.
(fast_find_position): Use new macro WINDOW_LEFT_MARGIN.
(show_mouse_face): Likewise.
(x_scroll_bar_set_handle): VERTICAL_SCROLL_BAR_INSIDE_WIDTH now
requires the frame as an argument.
(x_scroll_bar_expose): Narrow the box slightly for a left-side scroll bar.
(show_mouse_face, clear_cursor): Likewise.
(x_display_cursor): New args X and Y.
(XTupdate_end, XTcursor_to, XTwrite_glyphs): Pass new args.
(XTupdate_begin): Initialize curs_x, curs_y here.
only for Motif.
(XTread_socket): Fixing previous change:
Clear last_mouse_press_frame on non-menu-bar ButtonPress.
Always use last_mouse_press_frame as frame for ButtonRelease.
But ignore the event if frame's output_data.x is null.
Save the ButtonRelease only if USE_MOTIF.
(last_mouse_press_frame): This is now a Lisp object.
(syms_of_xterm): Initialize and staticpro it.
