Windows: add cm_HaveToken

cm_HaveToken answers the question of whether a cm_user_t has a
token for a specified cell.

Reviewed-on: http://gerrit.openafs.org/9076
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 748e07d24367e80e353446bdb97f61ce420d303d)

Change-Id: I861dbefdde31317a63d5a3c548c3ea51b509d07e
Reviewed-on: http://gerrit.openafs.org/9084
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: AFSFileOpenResultCB.Authenticated

Notify the redirector whether the the result of a file open
request is the result of a user authenticated action.

Reviewed-on: http://gerrit.openafs.org/9077
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit aa5d0d708f6a758396b04779ceac271a039439fb)

Change-Id: I1dfcfba2a1963aeb11b01ef3bf7ad0f12cbdbf43
Reviewed-on: http://gerrit.openafs.org/9081
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>