Bugs in s12z test suite.

[John Darrington]

On Sun, Sep 02, 2018 at 10:27:05PM +0930, Alan Modra wrote:
     
     Your reloc howtos look broken to me.  Your target uses rela relocs,
     yet the howtos have non-zero src_mask.  Rela targets normally ignore
     the section contents when applying relocations.
     

Thanks for the tip.  I wasn't aware of that.  I will investigate further
with that in mind.

J'