BugLink: http://bugs.launchpad.net/bugs/1379535

This is a sync and squash of the apparmor 3.5-beta1 snapshot. The
set of patches in this squash are available in
  git://kernel.ubuntu.com/jj/ubuntu-xenial.git
using the the tag
  apparmor-3.5-beta1-presuash-snapshot

This fixes multiple bugs and adds the policy namespace stacking features.
BugLink: http://bugs.launchpad.net/bugs/1379535Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>