GitLab

remove dialer from GCR client

Let's save log.Error for things the user can take action on.
Moved all our diagnostics to log.Debug. We can ideally reduce them
even further.

This addr manager should seriously help with the addrsplosion
problem.

fixes breakages:
  - peer.Peer -> peer.ID
  - peer.X -> peer.PeerInfo
  - netmsg -> p2p streams