-fix #3168, cancel retry task AFTER GMT_cancel, as that triggers a callback in gnunet-service-mesh-peer.c:952 which may then CREATE a new task

git-svn-id: https://gnunet.org/svn/gnunet@31187 140774ce-b5e7-0310-ab8b-a85725594a96
fix #3170, again by cancelling scheduler tasks last so that they cannot be re-created by callbacks triggered during shutdown of the rest of the struct

git-svn-id: https://gnunet.org/svn/gnunet@31188 140774ce-b5e7-0310-ab8b-a85725594a96
-ignore

git-svn-id: https://gnunet.org/svn/gnunet@31189 140774ce-b5e7-0310-ab8b-a85725594a96
-ignore

git-svn-id: https://gnunet.org/svn/gnunet@31190 140774ce-b5e7-0310-ab8b-a85725594a96
-rename enum MeshOption to GNUNET_MESH_ChannelOption to ensure we use GNUNET_MESH_ prefix as we should

git-svn-id: https://gnunet.org/svn/gnunet@31192 140774ce-b5e7-0310-ab8b-a85725594a96
-doxgyen, indentation, code clean up

git-svn-id: https://gnunet.org/svn/gnunet@31193 140774ce-b5e7-0310-ab8b-a85725594a96
API cleanup, rename GNUNET_TRANSPORT_check_neighbour_connected to GNUNET_TRANSPORT_check_peer_connected

git-svn-id: https://gnunet.org/svn/gnunet@31194 140774ce-b5e7-0310-ab8b-a85725594a96
-complete comment

git-svn-id: https://gnunet.org/svn/gnunet@31195 140774ce-b5e7-0310-ab8b-a85725594a96