Fixed CPAN Testers bug in bad-hosts.t

Some weird ISPs or DNS providers take an address like
http://i.dont.exist/ and resolve it to something "useful" such as
http://navigationshilfe1.t-online.de/dnserror?url=http://i.dont.exist/

If that's happening then let's just give up on this test entirely!
Bump to v0.16 (plus CHANGES update)