Auto merge of #855 - kallisti5:haiku-lutimes, r=alexcrichton
Auto merge of #855 - kallisti5:haiku-lutimes, r=alexcrichton

haiku: Add missing lutimes

* BeOS traditionally didn't have lutimes, however to make Haiku
  more compatible and easier to port for, we added an implementation
  of it.

rust-lang-nursery/libc,rust-lang/libc,rust-lang-nursery/libc,rust-lang/libc,rust-lang/libc,rust-lang-nursery/libc