Windows: Invalidate all volumes at library init

Windows: Invalidate all volumes at library init

The afsredirlib.sys library driver is unloaded when the afsd_service
stops and is reloaded when the afsd_service restarts.  During the
shutdown window any objects known to the kernel are preserved by
afsredir.sys.  When the afsd_service restarts, there are no valid
callbacks on any objects so the afsredirlib.sys must invalidate all
status info to permit the service to request a callback from the
file server on next use.

Change-Id: I3e8fa9513f435ff5cd1a8cfb8daa766aa30dd8c1
Reviewed-on: http://gerrit.openafs.org/6617
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>