support for log data directory


git-svn-id: https://gnunet.org/svn/gnunet@33147 140774ce-b5e7-0310-ab8b-a85725594a96
fix output format


git-svn-id: https://gnunet.org/svn/gnunet@33148 140774ce-b5e7-0310-ab8b-a85725594a96