[3.3, 3.4, HEAD] Include baseline used for libstdc++-v3 abi check in test summary

[Mark Mitchell]

Matthias Klose wrote:

> This patch was submitted two times, but never approved or rejected. It
> just adds one line to the test summary indicating the baseline used
> for the libstdc++ baseline comparisison. without that you need to know
> (or look at libstdc++-v3/configure.host), which baseline gets used for
> which targets. A tool for extracting the baseline info from the test
> reports is helped by the added line.
> 
> Any reason not to checkin?

Not from me, but this is up to the V3 folks.

-- 
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com