I added a new class, Memcached_DataObject, that will (optionally)
fetch data out of a memcached server if it's available. This only
works on 'staticGet'.
Methods that write to the database (insert, update, delete) will clear
and set the cache correctly, too.
darcs-hash:20080926160941-5ed1f-922de078b4c1941853ad014edf9a17fae486f8cf.gz
Added an inbox and outbox for direct messages.
Factored common code to mailbox.php. Factored common code with
stream.php to personal.php.
darcs-hash:20080916195346-84dde-b5c846f713a970c41fd1b0671cb333e91f3cb920.gz
