Auto merge of #784 - Mic92:largefilesupport, r=alexcrichton
Auto merge of #784 - Mic92:largefilesupport, r=alexcrichton

Add fstatat64 on Linux/Android

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