Rust update: `std::vec_ng`->`std::vec` and `std::vec`->`std::slice` + removed unused imports
Rust update: `TcpStream::read_bytes` -> `TcpStream::read_exact`
Rust update: Switched to the new inner macro syntax, with a quick fix for the `headers_mod` macro
Merge pull request #69 from Ogeon/master

Rust updates: vec + slice, read_bytes and inner attributes
Follow the latest changes up to 2014-03-23

related issues of mozilla/rust:
- mozilla/rust@0305ed5d22e4  std: Add Vec to the prelude

already fixed in #69:
- mozilla/rust#12772  rename std::vec -> std::slice
- mozilla/rust#13028  rename std::vec_ng -> std::vec
- mozilla/rust#12907  std: Rename {push,read}_bytes to {push,read}_exact