samba: Retain case sensitivity of cifs client

samba: Retain case sensitivity of cifs client

When a client supports extended security but server does not,
and that client, in Flags2 field of smb header indicates that

- it supports extended security negotiation
- it does not support security signatures
- it does not require security signatures

Samba server treats a client as a Vista client.

That turns off case sensitivity and that is a problem for cifs vfs client.

So include remote cifs client along with remote samba client
to not do so otherwise.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=10755

Signed-off-by: Shirish Pargaonkar <spargaonkar@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Autobuild-User(master): David Disseldorp <ddiss@samba.org>
Autobuild-Date(master): Fri Aug  1 16:11:43 CEST 2014 on sn-devel-104

(cherry picked from commit a0583976da2ba09da0fd94f739ed4f5851e2a858)