[PATCH] symlink nesting level change

It's way past time to bump it to 8.  Everyone had been warned - for
months now.

RH kernels have had this for more than a year.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>