Windows: Protect against infinite VIO retries

Keep track of the number of VIO errors reported by the file servers.
If the count exceeds 100, abandon the request.

Reviewed-on: http://gerrit.openafs.org/9923
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 436836d81ad17d78ddfe794db0c3bbf8f31a2783)

Change-Id: Ic5aba58fe688fde4c7f4fc1fbffd58c91b8d0241
Reviewed-on: http://gerrit.openafs.org/9925
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>