[PATCH] fix multiboot/aout, cleanup relocators, etc

[Robert Millan]

Hi,

It seems when adding the relocators for ELF, I failed to notice both ELF and
a.out loaders share the same grub_multiboot_real_boot function, and hence my
code was trashing %eax.

Since this functionality is useful for the a.out loader anyway, I decided to
implement it as well.  In the process I did some cleanup, mostly to reduce
code duplication among both users of the relocators.

So here's the patch.  Please comment!

-- 
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."

multiboot_reloc.diff
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