Bug#555303: kfreebsd-8: problems with *at syscalls

[Petr Salinger <Petr.Salinger@seznam.cz>]

Package: kfreebsd-8

I tried to rebuild current eglibc under kfreebsd-8,
there are some problems with *at functions. Under kfreebsd-7
we use some userspace emulation, under kfreebsd-8 we directly use
*at syscalls.

The new failed tests are:

io/tst-renameat.out
io/tst-faccessat.out
io/tst-symlinkat.out
io/tst-linkat.out
io/tst-readlinkat.out
io/tst-mkdirat.out
io/tst-mknodat.out

It needs further investigation before we could
make 8.x kernel the default one.

Petr