As described in the previous commit - Windows Server 2016 (ReFS) ignores
locks for FSCTL_DUPLICATE_EXTENTS_TO_FILE. Do the same for Samba.
Signed-off-by: David Disseldorp <ddiss@samba.org> Reviewed-by: Ralph Böhme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed May 10 12:27:00 CEST 2017 on sn-devel-144