[PATCH] Add ABI baseline for s390x-*-linux*

[Paolo Carlini]

Ulrich Weigand wrote:

>Hello,
>
>this adds an ABI baseline for s390x-*-linux*.  Since s390x defaults to
>use s390 as cpu name, I have to add a special case for abi_baseline_pair
>in configure.host.
>
>I've also updated s390-linux-gnu baseline; there were a couple of 
>symbols missing.
>  
>
Hi Ulrich.

There is something that I don't understand here: *all* our baselines are 
3.4.0
baselines, and identical in mainline and 3_4-branch. In particular, that for
s390-linux-gnu should be ok as-is (Matthias Klose provided it)

Paolo.