Windows: Explorer Shell Extension enhancements

Windows: Explorer Shell Extension enhancements

Redesign the AFS Volume Tab to report:

 . Volume name
 . Volume ID
 . Cell
 . Server
 . Availability
 . Quota
 . Partition Info
 . Replica Server List

Properly handle multiple selections to report the volume info
of the parent object and not the actively selected object.

When a mount point is selected, display the volume information
for the target volume.

Remove file server from AFS tab.

Modify the AFS tab to better handle multiple selections including
mount points.

Extend many gui2fs functions to implement a poor man's "follow"
option.  This really should be done with the pioctl 'literal'
capability but this is an improvement.  The pioctl modifications
will require a major redesign of gui2fs.c and all of the dialogs.

Change-Id: Ib009beb81d841fb3bbbd35b1eb0faec2c40eaf4e
Reviewed-on: http://gerrit.openafs.org/5531
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>