more window port interface adjustments

further adjustments to the window port interface to pass a pointer
to a glyph_info struct which describes not just the glyph number
itself, but also the ttychar, the color, the glyphflags, and the
symset index.

This affects two existing window port calls that get passed glyphs
and does the parameter consistently for both of them using the
glyph_info struct pointer:
	print_glyph()
	add_menu().

The recently added glyphmod parameter is now unnecessary and has been
removed.

win/curses/cursdial.h

@@ -13,8 +13,9 @@ int curses_character_input_dialog(const char *prompt, const char *choices,
                                   CHAR_P def);
 int curses_ext_cmd(void);
 void curses_create_nhmenu(winid wid, unsigned long);
-void curses_add_nhmenu_item(winid wid, int glyph, const ANY_P *identifier,
-                            CHAR_P accelerator, CHAR_P group_accel, int attr,
+void curses_add_nhmenu_item(winid wid, const glyph_info *glyphinfo,
+                            const ANY_P *identifier, CHAR_P accelerator,
+                            CHAR_P group_accel, int attr,
                             const char *str, unsigned itemflags);
 void curs_menu_set_bottom_heavy(winid);
 void curses_finalize_nhmenu(winid wid, const char *prompt);