(KAME-snap 9091) RADIX_MPATH support

[Li, Qing]

> 
> The KAME RADIS_MPATH is supported only on NetBSD.
> 

    I should have read IMPLEMENTATION more carefully.

>
> FreeBSD maay be compiable with the option, but it will not 
> work properly.
> 

    I will try fixing the FreeBSD boot problem and then 
    submit the changes for review if there is general 
    interest in getting RADIX_MPATH working on FreeBSD.

    Thanks,

	-- Qing