[imp] mailbox listing speed-up

[Ziba Scott]

No problem.  Here it is.  Again, the bulk of the diff is because of the
indentations I added to the blocks which I put inside a new if
statement.  I'm also attaching the whole Tree.php file in case that's
more convenient.

-Ziba

Michael M Slusarz wrote:
> 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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