[Dovecot] 1.0.rc18 released

http://dovecot.org/releases/dovecot-1.0.rc18.tar.gz http://dovecot.org/releases/dovecot-1.0.rc18.tar.gz.sig

I think we're quite near v1.0 now.

* ACL plugin + Maildir: Moved dovecot-acl file from control directory
  to maildir. To prevent accidents caused by this change, Dovecot
  kills itself if it finds dovecot-acl file from the control directory.
* When opening a maildir, check if tmp/'s atime is over 8h old. If it
  is, delete files in it with ctime older than 36h. However if
  atime - ctime > 36h, it means that there's nothing to be deleted and
  the scanning isn't done. We update atime ourself if filesystem is
  mounted with noatime.
* base_dir doesn't need to be group-readable, don't force it.
* mail_read_mmaped setting is deprecated and possibly broken. It's now
  removed from dovecot-example.conf, but it still works for now.
* Removed also umask setting from dovecot-example.conf since currently
  it doesn't do what it's supposed to.

+ Authentication cache caches now also userdb data.
+ Added mail_log plugin to log various mail operations. Currently it
  logs mail copies, deletions, expunges and mailbox deletions.
- dict quota: messages=n parameter actually changed storage limit.
- A lot of fixes to handling index files. This should fix almost all
  of the problems ever reported.
- LDAP: auth_bind=yes was more or less broken.
- Saved mails and dovecot-keywords file didn't set the group from
  dovecot-shared file.
- Fixed potential assert-crash while searching messages
- Fixed some crashes with invalid X-UID headers in mboxes
- If you didn't have a namespace with empty prefix, giving STATUS
  command for a non-existing namespace caused the connection to give
  "NO Unknown namespace" errors for all the future commands.