changing to x86_64 from i386

[elekktretterr at exemail.com.au]

>
>     Unfortunately no.  We'd need 32 bit emulation support in the 64 bit
>     kernel to be able to boot the 32-bit filesystem image with a 64-bit
>     kernel and we don't have it.
>
>     The best solution is a completely fresh install using the
>     64-bit img/iso.
>
>     Doing an upgrade in place would be difficult.  You would have to boot
>     from a 64-bit usb key and then installworld/installkernel the update,
>     but beyond that the system likely has 32 bit binaries strewn all over
>     the place (e.g. installed pkgsrc stuff) and cleaning it all out could
>     take forever.
>
>     The fresh install really is the best choice.

Thanks Matt!
Petr