[testsuite] backport cleanups to 4.7

[Janis Johnson]

On 07/06/2012 11:27 AM, Janis Johnson wrote:
> Between June 12 and June 28 I checked in lots of GCC testsuite patches
> to individual tests and to test infrastrure files to eliminate
> non-unique lines in test summaries, as well as a few related cleanups.
> May I backport those to GCC 4.7?

It's been pointed out that I'm once again a testsuite maintainer and
can make this decision myself.  I'll be backporting the cleanups to
the 4.7 branch soon.

Janis