message: Fix echo-message regression from 1.6.x
  This patch prevents PRIVMSGs from clients frmo being echoed to other clients if their target has the status prefix.
diff: @@ -1241,7 +1241,6 @@ bool CClient::OnTextMessage(CTextMessage& Message) {
  }
  if (sTarget.TrimPrefix(m_pUser->GetStatusPrefix())) {
  - EchoMessage(Message);
  if (sTarget.Equals("status")) {
  CString sMsg = Message.GetText();
  UserCommand(sMsg);
  