qemu fails to boot recent releases of Fedora Core with the
-kernel/-initrd options, since the kernel is large enough to overrun
the space allocated to it by qemu's built-in bootloader.

The attached patch simply moves the base address of the initrd to a
higher location, which allows sufficient space for a larger kernel.

Ideally qemu would figure out where to load the initrd based on the
size of the kernel, but I hope this patch is simple enough to solve
the problem for now.

--Ed