(x_draw_bar_cursor): If the background color of the

(x_draw_bar_cursor): If the background color of the
glyph under the cursor equals the frame's cursor color, use
the glyph's foreground color for drawing the bar cursor.
(x_after_update_window_line): Clear internal border
in different circumstances.
(w32_set_vertical_scroll_bar): Check for width and height > 0.
(w32_draw_relief_rect): Correct relief by 1 pixel.
(x_set_glyph_string_background_width): Set
extends_to_end_of_line_p if the row's fill_line_p is set and
drawing the last glyph with DRAW_IMAGE_{RAISED,SUNKEN}.
(x_display_and_set_cursor): If cursor_in_echo_area,
use NO_CURSOR if cursor_in_non_selected_windows is false.
(show_mouse_face): Clean up.  Recognize overwritten
cursor differently.
(x_draw_glyphs): Remove parameters READ_START and
REAL_END.  Notice if cursor gets overwritten.
(notice_overwritten_cursor): Renamed from
note_overwritten_text_cursor.  Rewritten to take glyph widths
into account, and to take X positions as parameters.
(x_draw_phys_cursor_glyph): Save state of w->phys_cursor_on_p
around call to x_draw_glyphs.