Always number series with a cover letter
Always number series with a cover letter

If a cover letter is desired to separate metadata about the commit
from the commit message itself and a user decides to enforce a cover
letter for a single patch, make sure to number the "series" so it is
clear as to what has happened.

Signed-off-by: John Snow <289757862e5c8f4e28b8c35cf1e82d038d363cc5@gmail.com>
Signed-off-by: Stefan Hajnoczi <484520986196e4a799496429ce8a499eb6488adb@gmail.com>

stefanha/git-publish,stefanha/git-publish