Produce dylib and rlib
Merge pull request #32 from larsbergstrom/dylib

Produce dylib and rlib
Updated to latest Rust: priv/pub
Merge pull request #30 from ozkriff/master

Updated to latest Rust, fixed warnings
libc is now an extern crate.
Merge pull request #34 from sebcrozet/libc

libc is now an extern crate.