Help with failing DBI-1.601 t/80proxy.t tests

[Tim Bunce]

To help diagnose the test failures some people are experiencing with
DBI-1.601 I've modified the t/80proxy.t file to include more info.

It would be a big help if anyone who has experienced a failure
(especially the cpan-testers I've CC'd) could fetch a copy from

    https://svn.perl.org/modules/dbi/trunk/t/80proxy.t

and replace their current t/80proxy.t file with it, then rerun the tests
and report what it says.

Thanks!

Tim.