[imp] Free space info into IMP

[Chuck Hagenbuch]

Quoting Dan Ellis <danellis@rushmore.com>:

> There's a function called imap_alerts() that I use to display any imap
> warnings given by the IMAP server.  

FYI, 2.3 displays imap alerts to the user.

> I believe this is the only way to (without going out of the IMAP protocol)
> accomplish this knwledge.

c-client 2000 has quota functions (it's an IMAP extension); someone just added 
imap_get/set_quota() functions to php, so we should be able to use them 
eventually in future versions.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"We have no fuel on board, plus or minus 8 kilograms." -A NASA scientist