/*
 * Returns a new Imlib2::Image initialized with the specified data.
 *
 * Examples:
 *   other_image = Imlib2::Image.load 'sample_file.png'
 *   width, height = other_image.width, other_image.height
 *   data = other_image.data_for_reading_only
 *   image = Imlib2::Image.create_using_data width, height, data
 *
 */
VALUE image_create_using_data(VALUE klass, VALUE w, VALUE h, VALUE data_o) {