WFCORE-129 - overlay does not work for zipped files in exploded archive

WFLY: https://issues.jboss.org/browse/WFCORE-129
6.4.0: https://bugzilla.redhat.com/show_bug.cgi?id=1147352
Im fairly sure thats just a copy of a loop that did exist in this file a bit earlier. Either I get it wrong, loop will check for first dir and the 'copyFile' will create proper path.