check-abi test results not in test summary

[Loren James Rittle]

In article <mailman.7875.1056525283.3041.gnu-libstdcpp@lists.nsr.labs.mot.com>
Matthias Klose <doko@cs.tu-berlin.de> writes:
> The check-abi target does not write it's results to a .sum file,
> which contrib/test_summary can include. Should the test results be
> appended to the libstdc++-v3.sum file, or should a new check-abi.sum
> file be used, which is read by the test_summary script?

Patch pre-approved to improve that situation.  Regarding the question:
Please place it in a new file since one atomic step should not trash
another.  Thanks for improving it if you can.

Regards,
Loren