======Synopsis:======
[[on]] [<modes>]wallop [<serial#>] [-|^]<match> { <action> }

======Description:======
This hook is triggered whenever the client receives a [[WALLOPS]] message
(a message sent to all irc operators).

======Parameters:======
|$0 |nickname of the message sender|
|$1 |a '*' if the sender is an operator, 'S' if the sender is a server|
|$2- |text of message|