Merging from STABLE:

Three improvements:

1. $nomoodlecookie = true. I just found out about this undocumented(?) hack(?)
   in lib/setup.php which is the perfect way to suppress some warnings. We
   don't need a session cookie for the chatd.

2. If allow_call_time_pass_reference is Off, socket_getpeername can't work.

3. Suppress "call time pass by reference is deprecated" messages for
   socket_getpeername, we don't have any choice here.