[RFA] replace stub fn mips_eabi_return_value

[Fred Fish]

On Monday 12 June 2006 15:26, Michael Snyder wrote:
> Fred, your similar code for o64 also makes use of register_size.
> I don't at the moment remember what the issue was, but I did run
> into problems that suggested to me that stack_argsize was a better
> choice -- and the change did improve things.
> 
> Any thoughts?

Actually I think I just snagged that code from one of the other
functions and tweaked it as needed.  So I don't have any insight into
which function is better.  I can give it a try both ways in my version
and see which one works better.  :-)

-Fred