additional signal handlers for test


git-svn-id: https://gnunet.org/svn/gnunet@31470 140774ce-b5e7-0310-ab8b-a85725594a96
disabling services


git-svn-id: https://gnunet.org/svn/gnunet@31471 140774ce-b5e7-0310-ab8b-a85725594a96