Windows: Additional I/O subsystem trace messages for AFSWrite

When debugging be able to obtain additional details about the
I/O subsystem.

Change-Id: Ie875870cb874c6df0d8f94781656af8a34eeddf5
Reviewed-on: http://gerrit.openafs.org/8977
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>