Rust bindings to *nix APIs

Rust friendly bindings to various *nix platform APIs (Linux, Darwin, ...). The goal is to not provide a 100% unified interface, but try as possible as well as providing platform specific APIs. It is up to the consumer of this library to decide how portable they want to be.

This is very much a work in progress and I'm mostly just adding bindings as I need them.

Of course, PRs welcome :)