releasing GNUnet 0.10.0

git-svn-id: https://gnunet.org/svn/gnunet@31745 140774ce-b5e7-0310-ab8b-a85725594a96
- destroy channel after timeout


git-svn-id: https://gnunet.org/svn/gnunet@31746 140774ce-b5e7-0310-ab8b-a85725594a96