[Review] Request from 'schubi2' @ 'yast/yast-pkg-bindings/review_140924_flag_onsystem_by_user'

Please review the following changes:
  * 79f724d packaging
  * e3fecfa fixed PkgPropertiesAll
  * c2cb73d moved onSystemByUser to Package.cc
  * 6e7643d fixed name
  * 484da0f taking item pointer
  * 0468414 added onsystem_by_user flag

> JFYI: The line is so long I cannot see what has been changed. Please 80  columns unless that 
> would make readability worse.

Martin, I am not sure if autodoc evaluate this entry correctly, if I use multi lines here.