v2.2.30 released

[Joseph Tam]

Timo Sirainen announced

> + If dovecot.index.cache corruption is detected, reset only the one
>   corrupted mail instead of the whole file.

Is this a big performance win?  I still have users with jumbo mailboxes
who insist on direct mailbox file access using procmail or mail readers,
which trigger index rebuilds when dovecot accesses them.

Joseph Tam <jtam.home at gmail.com>