[MERGE] Support MH-E in EmacsMail, using mml.

[Ian Clatworthy]

Ian Clatworthy has voted approve.
Status is now: Approved
Comment:
I can't easily test this but, as vila says, the patch is trivial enough.

Vincent,

Can you merge this please? (My net access is limited right now.)

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C18391.1235638189%40wundagore.diplodocus.org%3E
Project: Bazaar