need better hints when modules are loaded in a weird order

[karenetheridge]

from #perl-qa:

14:00 < ether> > You should load Test::Tester before Test::Builder (or anything that loads Test::Builder) at /Volumes/chambord/Users/ether/perl5/perlbrew/perls/34.3/lib/5.34.3/Test/Tester.pm line 9.
14:00 < ether> it would help if that was a carp, not a warn; I have no idea what the culprit code is
14:00 < ether> Exodist: ^^
18:07 < Exodist> A carp is only half the battle. You will also need to know where tb was loaded. I am on my phone, not a laptop, can someone file a ticket? I also want to change that message to recommend 
                 more modern ways to test the test tools.
18:07 < ether> hmm good point, what matters is the first part, not when Test::Builder was loaded.
18:07 < ether> I'll file
18:08 < ether> I saw this when installing a bunch of distributions; I am not sure if it was from a particular dist's tests, or from cpanm itself, but presumably the former