Updated list of available mail storage formats. Changed deliver's internal storage format from mbox to raw.
Updated list of available mail storage formats. Changed deliver's internal
storage format from mbox to raw.

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branch : HEAD

jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch