Split up rules for tests using mtrace and something else

[Joseph S. Myers]

On Thu, 13 Feb 2014, Brooks Moses wrote:

> This looks OK to me, though I wonder if it would be justifiable within our
> conventions to spell that as tst-rxspenser-no-utf8.  It took me until I was
> most of the way through the patch to realize that it wasn't a completely
> opaque "n out f8".

I have committed the patch with that renaming.

-- 
Joseph S. Myers
joseph@codesourcery.com