bug#53427: perror should not errcnt across test files

[Jacob Bachmeyer]

Martin Cermak wrote:
> There seems to be an old bug originally reported in the Red Hat
> bug tracker [1] still present in the dejagnu 1.6.3 sources.
> Steps to Reproduce:
>
>
> echo 'perror foo' >a.exp; echo 'pass bar' >b.exp; runtest a.exp b.exp; cat 
> testrun.sum
>
> Actual results:
> [...]
>
> Patch attached.  Please consider fixing.

A regression test and fix has been pushed to Savannah on the PR53427 
branch, as of commit c5964e8fa2a8c3657cd6f6fef63d43451eedac7d.

The supplied patch would have also zeroed the per-target test counts 
between test files, so it was not usable.  A more-direct solution was 
applied.

Please confirm that this resolves the issue with whatever system 
originally encountered this bug, if possible.  If so, I will merge the 
branch and this will be fixed in 1.6.4.


-- Jacob