Perl, Pollution, huh?
WIP: Accessing Perl scalars from Lua

Alas, pad_findmy seems to have been refactored/renamed/whatever
since 5.14.2. Also, it appears to crash and burn if called during run
time? Or maybe I'm doing it wrong? Well, eventually, this shouldn't
matter and it should all happen at compile time anyway. Until then,
don't call perl.value_as_int, will you?