fstatat is broke

[Timo Teräs]

Hi all,

I'm using the *at stuff and noticed that fstatat is broke.
fstatat is a bit different since that syscall is not really
available.

Glibc makes fstatat do fstatat64 syscall and converts the
struct kernel_stat64 to struct stat. I think that is what
was also intended in uclibc case, but someone left the work
halfway. Now it badly uses struct kernel_stat with fstatat64
syscall. We need to use the struct kernel_stat64 and implement
the new conversion case.

- Timo