FreeBSD UDF support

[Wojciech Puchar]

> His project comes from NetBSD and modernises the UDF standard towards
> 2.5x. With this driver, you would be able to read modern not encrypted
> Blu-rays and DVDs. The driver works in principle, some minor issues have
> to be solved.
>
> Unfortunately there is only very little interest to integrate this
> driver into base.
>
i need RW support so it is not much use for me.