Windows: Client handling of VNOSERVICE

Windows: Client handling of VNOSERVICE

VNOSERVICE should not be grouped together with the volume status
error codes.  It is used to indicate that the RPC was not serviced.
The file server issues it when its idle dead timeout period is reached
while receiving rx call data.  The client's existing status information
is still valid and the client can retry the call.

Change-Id: I51e447824366381e740361576c96559f1c4f3fd3
Reviewed-on: http://gerrit.openafs.org/6938
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>