improvements


git-svn-id: https://gnunet.org/svn/gnunet@31999 140774ce-b5e7-0310-ab8b-a85725594a96
fixes for makefile


git-svn-id: https://gnunet.org/svn/gnunet@32000 140774ce-b5e7-0310-ab8b-a85725594a96