File _constraints of Package fractal

<?xml version="1.0"?>
<constraints>
  <hardware>
    <jobs>4</jobs>
  <disk>
    <!-- Maximal used disk space: 14746 Mbyte -->
    <size unit="G">18</size>
  </disk>
    <physicalmemory>
      <!-- Maximal used memory: 13976 Mbyte -->
      <size unit="G">20</size>
    </physicalmemory>
  </hardware>
  <hostlabel exclude="true">SLOW_CPU</hostlabel>
</constraints>