[Review] Request from 'schubi2' @ 'yast/yast-autoinstallation/review_140825_second_stage'

Please review the following changes:
  * 0bd3a7a packaging
  * 034a32a making second_stage public in order to switch off completely
  * 7063df8 imaging: check for script entry only

Johannes Meixner has told be that script_location has been enough too in SLES11. I have not checked, but I believe him :-)