File _servicedata of Package libscrypt

<servicedata>
  <service name="tar_scm">
    <param name="url">https://github.com/technion/libscrypt.git</param>
    <param name="changesrevision">4f7d1de4af5ce4951711d194f103c5faaa7a918a</param>
  </service>
</servicedata>