Bug#757402: git: test suite fails on hppa, in run_with_limited_stack

Great! WFM on amd64, too.

>  *)
> + uname_m=$(uname -m)
> + case $uname_m in
> + parisc*)
> +     test_set_prereq HPPA
> +     ;;
> + esac

Probably cleanest to put this outside the `case $uname_s`.

Would you mind if I send a version of this patch to the upstream
mailing list? I think that's the best route for it to go through.

Or you're of course welcome to do so (and please cc this bug); if you
haven't submitted patches to Git before, you'll want to read the
instructions here:
https://git.github.io/htmldocs/SubmittingPatches.html#send-patches

Cheers,
Greg