/*
 * Is the repeat flag set?
 *
 * Examples:
 *   puts 'repeating' if remote.is_repeating?
 *   puts 'repeating' if remote.repeating?
 *   puts 'repeating' if remote.is_repeat?
 *   puts 'repeating' if remote.repeat?
 *
 */
static VALUE xr_repeat(VALUE self) {