- Rename various fields related to the lower-zone protection code to sync
  up with 2.4.

- Remove the automatic determination of the values of the per-zone
  protection levels from a single tunable.  Replace this with a simple
  per-zone sysctl.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>