libcli/security: note suboptimality of conditional ACE Contains operators

libcli/security: note suboptimality of conditional ACE Contains operators

The Contains and Any_of operators could use a sorted comparison like
compare_composites_via_sort(), rather than O(n²) nested loops. But
that would involve amount of quite fiddly work that I am not starting
on now.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Nov 27 23:38:13 UTC 2023 on atb-devel-224