Windows: cm_TryBulkStatRPC must process VIO errors

Windows: cm_TryBulkStatRPC must process VIO errors

If the bulkStat errorCode indicates that a particular object
is inaccessible due to a VIO error, we must update the server
status appropriately in order to permit failover.

LICENSE MIT

Change-Id: I19ce3d2c5b138d519fb1c437f6d5109d7d8b1310
Reviewed-on: http://gerrit.openafs.org/2657
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>
(cherry picked from commit 3f69933c4243d6861d5cce701c28f2dee088e6c2)
Reviewed-on: http://gerrit.openafs.org/2704