Policy regarding adding email addresses to '.mailmap'.

[Mathieu Lirzin]

My questions are about how do we maintain the new '.mailmap' file.

- Do the new addresses need to be added in the same commit where it
  appears or in a separate commit?

- In the case of a separate commit, will it be synchronous or
  asynchronous (meaning that multiples adresses can be added at the same
  time) ?

- Is it better to ask the owner which email to choose in AUTHORS or to
  use automatically the more recent one?

- On the technical side, how to automate the process?

Ideas welcome!

--
Mathieu Lirzin