Replace Parrot-VM with Perl

Since Parrot is going away, and there's a rather nice perl library to link to. Here's the surprise reveal as captured on my non-Retina screen:

![libgit2](https://f.cloud.github.com/assets/39902/158271/9d20a408-76e0-11e2-9d4d-b6f35bfa7650.jpg)