Windows: Add AFSCreateSymlinkCB data structures

AFSCreateSymlinkCB and AFSCreateSymlinkResultCB
Used for creating a symlink to either a file or a directory.

Reviewed-on: http://gerrit.openafs.org/9338
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 89b07844d318637cf8c643d60dd174cb1f71db87)

Change-Id: Ib84cced422cd11296d65cc5a6f79f2efda65e5d2
Reviewed-on: http://gerrit.openafs.org/9382
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: AFS_NAME_ARRAY_TAG value

The AFS_NAME_ARRAY_TAG value collided with AFS_NAME_BUFFER_TEN_TAG.
Change its definition.

Reviewed-on: http://gerrit.openafs.org/9339
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 1ac432b7d0259a01e158016307966c76b3ba9d79)

Change-Id: Ife31cdf48f73777c35c951223fa6a9f77e664b3f
Reviewed-on: http://gerrit.openafs.org/9383
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>