KWSys: Fix GetActualCaseForPath for UNC paths
KWSys: Fix GetActualCaseForPath for UNC paths

See issue #11023.

Author: Clinton Stimpson <06507031b99bae4eb6a9495b9bca03a07a2284cf@elemtech.com>

chuckatkins/KWSys,chuckatkins/KWSys,chuckatkins/KWSys,chuckatkins/KWSys