Windows: Robocopy Symlinks

This patchset enables AFS Symlinks and DFSlinks to be copied to
a local NTFS disk using robocopy's /SL option.

Separate print names and substitute names are now provided permitting
the reparse data copied from AFS to be applied to a local disk object
for recreation.

Change-Id: Ifbd9cc82af4802c932023b579dc25c74b1bc47ce
Reviewed-on: http://gerrit.openafs.org/9655
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-on: http://gerrit.openafs.org/9657
Windows: Create Symlinks in Volume Roots

Permit the CreateSymbolicLink API to create symlinks in volume
root directories.

Change-Id: If339ecac89eec7f89ff4907d1bba9bca85c698c3
Reviewed-on: http://gerrit.openafs.org/9656
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-on: http://gerrit.openafs.org/9658