(Qarrow, Qhand, Qtext, Qpointer): New variables for
pointer types. (Qrelative_width, Qalign_to): Remove unused variables. (Vvoid_text_area_pointer): Replace Vshow_text_cursor_in_void. (QCmap, QCpointer, Qrect, Qcircle, Qpoly): New variables for image maps. (x_y_to_hpos_vpos): Return glyph relative coordinates through new dx and dy args. Remove buffer_only_p arg (always 0). Simplify code accordingly. (get_glyph_string_clip_rect): Draw cursor using glyph's rather than row's ascent and height, to get sensible height on tall rows. (build_desired_tool_bar_string): Remove Qimage extern. (get_tool_bar_item): Fix call to x_y_to_hpos_vpos. (produce_image_glyph): Adjust it.ascent to minimum row ascent if image glyph is alone on the last line. (append_glyph, append_composite_glyph, produce_image_glyph) (append_stretch_glyph): Set glyph's ascent and descent. (on_hot_spot_p): New function to check if position is inside an rectangular, circular, or polygon-shaped image hot-spot, (find_hot_spot): New function to search for image hot-spot. (Flookup_image_map): New defun to search for image hot-spot. (define_frame_cursor1): New aux function to determine frame pointer. (note_mode_line_or_margin_highlight, note_mouse_highlight): Handle `pointer' text property and :pointer image property to control frame pointer shape. Detect image hot-spots for pointer and help_echo properties. Use define_frame_cursor1. (note_mouse_highlight): Use Vvoid_text_area_pointer. (syms_of_xdisp): Defsubr new defun. Intern and staticpro new variables. DEFVAR_LISP Vvoid_text_area_pointer instead of Vshow_text_cursor_in_void.
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