message: Fix time path, use c_str macro
diff: @@ -2,7 +2,6 @@ use super::super::types::*;
  use super::super::{Pal, PalEpoll};
  use super::Sys;
  -use c_str::CStr;
  use core::{mem, slice};
  use fs::File;
  use header::errno::*;
  @@ -10,13 +9,14 @@ use header::fcntl::*;
  use header::signal::sigset_t;
  use header::sys_epoll::*;
  use io::prelude::*;
  +use platform;
  use syscall::data::{Event, TimeSpec};
  use syscall::flag::EVENT_READ;
  impl PalEpoll for Sys {
  fn epoll_create1(flags: c_int) -> c_int {
  Sys::open(
  - CStr::from_bytes_with_nul(b"event:\0").unwrap(),
  + c_str!("event:"),
  O_RDWR | flags,
  0,
  )
  @@ -48,7 +48,7 @@ impl PalEpoll for Sys {
  ) as c_int
  },
  _ => {
  - platform::errno = errno::EINVAL;
  + unsafe { platform::errno = EINVAL };
  return -1;
  }
  }
  @@ -65,7 +65,7 @@ impl PalEpoll for Sys {
  assert_eq!(mem::size_of::<epoll_event>(), mem::size_of::<Event>());
  let timer_opt = if timeout != -1 {
  - match File::open(CStr::from_bytes_with_nul(b"time:\0").unwrap(), O_RDWR) {
  + match File::open(c_str!("time:4"), O_RDWR) {
  Err(_) => return -1,
  Ok(mut timer) => {
  let mut time = TimeSpec::default();
  