[Dovecot] New mailbox format

[Brian Bartholomew]

> Reiser doesn't use INodes and appears to have infinite inodes. I've
> never used maildir but if I did I'd want to use Reiser on it because
> that's where Reiser is supposed to really gain.

My Sun 420R bought in 2001 just took six seconds for find | wc to tell
me I had half a million files and dirs in all my Maildirs.

| backup systems will still continue to blow chunks when presented
| with 100Ms of inodes...

We use IBM's Tivoli Storage Manager (TSM).  It's probably only
cost-effective for large shops, but it works great.

							Brian