[imp] mailbox listing speed-up

[Michael M Slusarz]

Quoting "Ziba Scott" <ziba at umich.edu>:

> Hi imp devs and all,
>
> After our recent horde/imp upgrade at umich, we've seen login times rise
> from ~5-10 seconds to ~10-30 seconds.   The bulk of this time is spent
> building the mailbox list in IMP_Tree (imp/lib/IMAP/Tree.php).  We've
> made some changes which dramatically reduce the IMP_Tree startup time
> and would love some feedback and basic sanity checking before we move
> forward with them.

Do you mind reattaching that patch in unified format?  Unified format  
is much easier to human parse.

michael

-- 
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Michael Slusarz [slusarz at horde.org]