Windows: File Attribute Reporting Consistency

Do a better job of consistently reporting file attribute information
via directory queries and file information queries.  Avoid computing file
attribute information for file information queries that do not return them
(e.g., Name Information) because computing it is expensive.

Reviewed-on: http://gerrit.openafs.org/9613
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 830744ff437a27b00044e7e94f3824b0db969c0b)

Change-Id: Ia9c5ec1dc3dc4f6bc58fd74b0d99fe14cacfe28e
Reviewed-on: http://gerrit.openafs.org/9620
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>