am 293977bd: Fix the doc for Notification.FLAG_ONLY_ALERT_ONCE.

    /**

     * Bit to be bitwise-ored into the {@link #flags} field that should be

     * set if you want the sound and/or vibration play each time the

     * notification is sent, even if it has not been canceled before that.

     * set if you would only like the sound, vibrate and ticker to be played

     * if the notification was not already showing.

     */

    public static final int FLAG_ONLY_ALERT_ONCE    = 0x00000008;