x86/shadow: un-hide "full" auditing code

x86/shadow: un-hide "full" auditing code

In particular sh_oos_audit() has become stale due to changes elsewhere,
and the need for adjustment was not noticed because both "full audit"
flags are off in both release and debug builds. Switch away from pre-
processor conditionals, thus exposing the code to the compiler at all
times. This obviously requires correcting the accumulated issues with
the so far hidden code.

Note that shadow_audit_tables() now also gains an effect with "full
entry audit" mode disabled; the prior code structure suggests that this
was originally intended anyway.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>