[Review] Request from 'schubi2' @ 'yast/yast-autoinstallation/review_140704_tmpfs_autoyast'

Please review the following changes:
  * bde2553 packaging
  * 3207a30 enable tmpfs in autoyast

this line is not needed, if you use variable later, then it is already defined to nil, so it will work even without this line ;)