Fixed a typo in the #[cfg()] of gettimeofday.
Fixed a typo in the #[cfg()] of gettimeofday.

The #[cfg()] was looking for 'arget_os' instead of 'target_os'.

anatol/libc,superriva/libc,philippkeller/libc,rust-lang-nursery/libc,rust-lang-nursery/libc,zethra/libc,rust-lang/libc,cactorium/libc,zethra/libc,anatol/libc,mneumann/libc,rust-lang-nursery/libc,philippkeller/libc,superriva/libc,cactorium/libc,rust-lang/libc,mneumann/libc,rust-lang/libc,zethra/libc,anatol/libc,philippkeller/libc,mneumann/libc,superriva/libc,cactorium/libc