test readelf for powerpc-eabi*

[Nick Clifton]

Hi Geoffrey,

> This causes readelf-wi to fail on powerpc, where before it wasn't run.
> The test seems to be very fragile when GCC's debug info generation is
> changed; I can't tell if it needs to be updated or deleted.

I think that it needs to be deleted.  I am not sure that this feature
of readelf can be reliably tested.  At least not using simple regexp
scripts.

Cheers
        Nick