Windows: AFS Redirector Support Headers

Windows: AFS Redirector Support Headers

This patchset includes all of the common headers upon which
all of the subsequent submissions depend.

Co-authored by Jeffrey Altman <jaltman@your-file-system.com>

Change-Id: I3b2ba6fe0a9a5231801db2cd1a340b9c518b9be4
Reviewed-on: http://gerrit.openafs.org/5431
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>