also dump the version of PadWalker (known issues with 5.8?)
remove unused module
remove useless shebangs in tests
use strict and warnings everywhere
whitespace
tests do not need to return a value
use_ok() is pretty pointless; remove
avoid importing at runtime
PadWalker tests do not pass on 5.8.x (RT#99581)

e.g.
http://www.cpantesters.org/cpan/report/cf48f5c2-5733-11e4-b837-0dea207b86d6
Devel-Gladiator-0.07

        - skip failing PadWalker tests on < 5.009 (RT#99581)