commit d2a7009f breaks xkbconf

Hi Eric. The commit below causes a very strange error while running startx.

While X is starting up it runs xkbcomp, which then prints "ERROR: Cannot open /usr/share/X11/xkb/compiled/server-0.xkm to write keyboard description" and then X shuts down. Reverting the commit below fixes the error:

commit d2a7009f0bb03fa22ad08dd25472efa0568126b9

Author: Eric Paris
Date:   Tue Jan 3 12:25:15 2012 -0500

capabitlies: ns_capable can use the cap helpers rather than lsm call

Just to reduce the number of places to change if we every change the LSM hook, use the capability helpers internally when possible.

index 5f99e5d..4762644 100644
@@ -384,7 +384,7 @@ bool ns_capable(struct user_namespace *ns, int cap)
                BUG();
        }
 
-       if (security_capable(current_cred(), ns, cap) == 0) {
+       if (has_ns_capability(current, ns, cap)) {
                current->flags |= PF_SUPERPRIV;
                return true;
        }