Add a RFC 2616 token definition.
Add a RFC 2616 token definition.

servo/rust-http,chris-morgan/rust-http,chris-morgan/rust-http,Shraddha512/rust-http,Shraddha512/rust-http,Shraddha512/rust-http,chris-morgan/rust-http,servo/rust-http,chris-morgan/rust-http,Shraddha512/rust-http,servo/rust-http,servo/rust-http,Shraddha512/rust-http