Keep the instances in seperate wrappers to clear up the hooks. This
allows for some OnServerStart and OnServerShutdown forwards.
To prepare support for relay servers, CHLTVServer::Shutdown is hooked to
detect shutdown instead of relying on the director unregistering the
instance.
CSS' CBaseClient::ClientPrintf tries to use the net channel directly
instead of going through the saner route using GameClient::SendNetMsg.
This introduces a stupid hack to work around the bots lack of a net
channel, so ClientPrintf's SVC_Print messages get included in the demo.
