Remove absolute path from build/debug.

It would be a lot better to setup a Perl environment that will load the
uninstalled module, but that will probably require some @INC
manipulation to achieve reliably. For now this will meet my needs.
Combine version declaration with initialization.
Declare $EST and $VERSION so strict is happy.

Not sure why I didn't catch this sooner... Weird. Maybe I wasn't testing
the correct version. -_-