3.4 PATCH: Consistently use _ABIO32 for _MIPS_SIM

[Eric Christopher]

> 
> (I didn't check the latest greatest glibc sources yet to make sure,
> but i did check the ChangeLogs and it doesn't look like there have
> been any changes w.r.t. uses of <sgidefs.h> since the version i
> checked and found broken.  I'm not going to have time to look into/fix
> this, unfortunately.)

I'll do this.

-eric

-- 
Eric Christopher <echristo@redhat.com>