Replaced the "Another client authenticated as your user, use the 'ListClients' command to see all clients" message with a configurable module ("clientnotify").

This means that you can now:
- turn off the message (it's even off by default until you load the module)
- have the message sent to you as a notice instead of a privmsg
- restrict messages to previously unseen client ip addresses only (no more spam on sucky connections)
- be notified of disconnecting clients if you want to.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1698 726aef4b-f618-498e-8847-2d620e286838

User.cpp

@@ -267,7 +267,6 @@ void CUser::UserConnected(CClient* pClient) {
 		BounceAllClients();
 	}
 
-	PutStatus("Another client authenticated as your user, use the 'ListClients' command to see all clients");
 	m_vClients.push_back(pClient);
 
 	if (m_RawBuffer.IsEmpty()) {