Update for API change

use std::libc::{c_int, c_void, c_char};

use std::ptr;

use std::task;

use std::unstable::atomics::{AtomicBool, INIT_ATOMIC_BOOL, AtomicUint,

use std::sync::atomics::{AtomicBool, INIT_ATOMIC_BOOL, AtomicUint,

                         INIT_ATOMIC_UINT, Acquire, Release, SeqCst};

use std::unstable::mutex::Mutex;

use std::io::{Stream, Reader, Writer, Decorator};