/*
 * Constructor for Imlib2::X11::Colormap object.
 *
 * Note: This method is not available unless Imlib2-Ruby was compiled
 * with X11 support.  You can check the constant Imlib2::X11_SUPPORT to
 * see if X11 support is available.
 *
 * This method is currently just a placeholder.
 *
 */
static VALUE cmap_init(VALUE self) {