[Dovecot] v2.0.2 released

http://dovecot.org/releases/2.0/dovecot-2.0.2.tar.gz http://dovecot.org/releases/2.0/dovecot-2.0.2.tar.gz.sig

Many small fixes and logging improvements, but most importantly fixes LMTP with Maildir.

* vpopmail support is disabled for now, since it's broken. You can use
  it via checkpassword support or its sql/ldap database directly.

- maildir: Fixed "duplicate uidlist entry" errors that happened at
  least with LMTP when mail was delivered to multiple recipients
- Deleting ACLs didn't cause entries to be removed from acl_shared_dict
- mail_max_lock_timeout setting wasn't working with all locks
- auth_cache_size setting's old-style value wasn't autoconverted
  and it usually also caused a crash