commit 71693b7 about emailutil causes errors

[Janna Martl]

As per subject, the most recent commit 71693b7 in next causes the
following:

Traceback (most recent call last):
  File "./offlineimap.py", line 33, in <module>
    from offlineimap import OfflineImap
  File "/home/pebbles/offlineimap-real/offlineimap/__init__.py", line 21, in <module>
    from offlineimap.init import OfflineImap
  File "/home/pebbles/offlineimap-real/offlineimap/init.py", line 28, in <module>
    from offlineimap import accounts, threadutil, syncmaster
  File "/home/pebbles/offlineimap-real/offlineimap/accounts.py", line 25, in <module>
    from offlineimap.repository import Repository
  File "/home/pebbles/offlineimap-real/offlineimap/repository/__init__.py", line 25, in <module>
    from offlineimap.repository.IMAP import IMAPRepository, MappedIMAPRepository
  File "/home/pebbles/offlineimap-real/offlineimap/repository/IMAP.py", line 25, in <module>
    from offlineimap import folder, imaputil, imapserver, OfflineImapError
  File "/home/pebbles/offlineimap-real/offlineimap/folder/__init__.py", line 1, in <module>
    from . import Base, Gmail, IMAP, Maildir, LocalStatus
  File "/home/pebbles/offlineimap-real/offlineimap/folder/Maildir.py", line 22, in <module>
    import emailutil

-- J.M.