Windows: 1.7.28 ChangeLog

Change-Id: I6cb3932788dbf341252fff451408b6b7a19fe48b
Reviewed-on: http://gerrit.openafs.org/10478
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>