Comment 1 for bug 1313146

I thought this was a one-line change in the Mailman.Message.OwnerNotification class, but it turns out lots of owner notices are created using the Mailman.Message.UserNotification class, and I don't want to send all user notices with Precedence: list because at least some are backscatter.

I think I can still do it without trolling the entire code base by checking the recipient address in the UserNotification send() method, but it won't be as quick as I thought.