Raw loader for diskless GRUB

[Florian Weimer]

I've got a NIC (3com 3c905c TX-M) which supports BOOTP and can load
images up to a certain size (~450 KB) via TFTP.  Unfortunately, the
image is stored at address 0x10000 and onwards, so I couldn't any of
the existing boot loaders, and couldn't load the 'diskless' image
directly.  In order to solve this problem, I've written a small loader
which copies the 'diskless' image to adress 0x8200 regardless of its
initial location.

If you're interested, I'll clean up the code and you can have it.