- Mustn't override a user-specified list_only value.

- Moved the computing of the options for the server down until
  after we've figured out the protocol_version for the transfer.
- If we're talking to a protocol-29 server in list-only mode,
  force the new --list-only mode (which avoids the -r with
  --exclude="/*/*" kluge).
- Output the options we sent to the daemon if verbose > 1.