[PATCH] export -boot parameter as qemu_boot{0,1,2}

[Robert Millan]

This patch makes GRUB gather the -boot parameter from CMOS and
export it as a set of variables (qemu_boot{0,1,2}), which can
be observed in grub.cfg scripts.

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

qemu_boot.diff
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