[GSS](7.3.z) JDR zip directories are files on Windows

The directory patch separators are wrong when run on Windows causing there to be no directories but file with the directory path in the name.

The JDR on Windows contains entries such as shown below, but there are no directories, they are all files, when JBOSS_HOME should be a directory and the same for the sub directories:

JBOSS_HOME\appclient\configuration\appclient.xml
JBOSS_HOME\appclient\configuration\logging.properties
JBOSS_HOME\bin\add-user.properties
JBOSS_HOME\bin\jboss-cli-logging.properties
JBOSS_HOME\bin\jboss-cli.xml