crop_scaled! (Imlib2::Image)

    /*
     * Crop and scale an image
     *
     * Examples:
     *   iw, ih = image.width, image.height
     *   new_w, new_h = iw - 20, ih - 20
     *   x, y, w, h = 10, 10, iw - 10, ih - 10
     *   image.crop_scaled! x, y, w, h, new_w, new_h
     *
     *   iw, ih = image.width, image.height
     *   new_w, new_h = iw - 20, ih - 20
     *   values = [10, 10, iw - 10, iw - 10, new_w, new_h]
     *   image.crop_scaled! values
     *
     *   iw, ih = image.width, image.height
     *   new_w, new_h = iw - 20, ih - 20
     *   x, y, w, h = 10, 10, iw - 10, ih - 10
     *   image.create_crop_scaled! x, y, w, h, new_w, new_h
     *
     *   iw, ih = image.width, image.height
     *   new_w, new_h = iw - 20, ih - 20
     *   values = [10, 10, iw - 10, iw - 10, new_w, new_h]
     *   image.create_crop_scaled! values
     *
     */
    static VALUE image_crop_scaled_inline(int argc, VALUE *argv, VALUE self) {