Windows: Fix SMB_COM_NEGOTIATE for MS11-043

Windows: Fix SMB_COM_NEGOTIATE for MS11-043

MS11-043 adds response validation for SMB_COM_NEGOTIATE messages
received by the SMB Redirector.  OpenAFS failed to properly specify
a Challenge and DomainName in the response when the security mode
is SMB_AUTH_NONE (or share with password).  This patchset corrects
smb_ReceiveNegotiate() so that it adheres to the protocol specification.

FIXES 130033

Reviewed-on: http://gerrit.openafs.org/4886
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
(cherry-picked from 7532b05221caf2c382d9e8c9ca5af4a284566920)

Change-Id: I67eb2b293228cacb4df20ac072beaf03f2111c55
Reviewed-on: http://gerrit.openafs.org/4893
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>