llseek: support __NR_llseek syscall
Older kernels use __NR__llseek for a 64-bit lseek syscall. Newer
kernels use __NR_llseek. This patch fixes the implementation of
lseek64 to use the __NR_llseek syscall if it exists.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>