- start reconnecting before running out of connections

git-svn-id: https://gnunet.org/svn/gnunet@33007 140774ce-b5e7-0310-ab8b-a85725594a96
- log

git-svn-id: https://gnunet.org/svn/gnunet@33008 140774ce-b5e7-0310-ab8b-a85725594a96
- don't schedule tunnel destruction on shutdown
- remove any scheduled delayed_destruction AFTER destroying all channels
- fixes #3366, #3372

git-svn-id: https://gnunet.org/svn/gnunet@33009 140774ce-b5e7-0310-ab8b-a85725594a96