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

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

better to use `if tmpfs_device && tmpfs_device["partitions"]` as bellow you call `delete_if` on content, so if content is `nil` it will crash.