git: amd64 - Add via variable decls to md_var.h

[YONETANI Tomokazu]

On Sat, Oct 03, 2009 at 08:27:38PM +0100, Alex Hornung wrote:
> Well, I can't really get it to compile for some other reasons (linker gives an
> error at some point?) so I can't really test it, but the recent amd64 commit
> should fix the issue.
> Let me know if the problem still remains.

I've confirmed both SMP and UP kernels compiled and booted on Parallels.

Thanks.