new logging functionality


git-svn-id: https://gnunet.org/svn/gnunet@32017 140774ce-b5e7-0310-ab8b-a85725594a96
fixing test case logging


git-svn-id: https://gnunet.org/svn/gnunet@32018 140774ce-b5e7-0310-ab8b-a85725594a96