Prefer 'unsigned long' to 'long unsigned int' and 'unsigned long int'.

Prefer 'unsigned long' to 'long unsigned int' and 'unsigned long int'.
* ftxfont.c (ftxfont_get_gcs):
* gtkutil.c (xg_set_widget_bg, xg_set_background_color):
* xfaces.c (x_free_colors, x_free_dpy_colors)
(x_create_gc, unload_color):
* xselect.c (x_property_data_to_lisp):
* xsettings.c (parse_settings):
* xterm.c (x_copy_color, x_alloc_lighter_color, x_setup_relief_color)
(get_bits_and_offset): Adjust definition.
* frame.c (XParseGeometry): Adjust locals.
* lisp.h (toplevel): Adjust EMACS_UINT type definition.
* regex.h (toplevel): Likewise for reg_syntax_t.