This patch finishes plumbing qemu_uuid through the VMware back door so that the
Bochs BIOS can actually fetch the information to put in the SMBIOS tables.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
Cc: Gleb Natapov <gleb@qumranet.com>
Cc: Anthony Liguori <anthony@codemonkey.ws>