Allow cmp_deeply to be used with NoTest

[colinnewell]

Allow cmp_deeply to be used with NoTest to deal with bug #60

[rjbs]

Thanks. I'm not keen on the way this uses print. I think we're better off returning a pair, like ($ok, $diagnostic), but that would be a different name… but really at that point, I think it's probably better off writing your own routine to do just what you want. I'm not sure "compare and print output to selected fh" is a good first choice.