add support for NodeList::ConnectPrinterToAll

src/node/node-list.cc

@@ -171,6 +171,11 @@ NodeList::Disconnect (std::string name, const CallbackBase &cb)
 {
   SimulationSingleton<NodeListPriv>::Get ()->GetTraceResolver ()->Disconnect (name, cb);
 }
+void 
+NodeList::ConnectPrinterToAll (std::ostream &os)
+{
+  SimulationSingleton<NodeListPriv>::Get ()->GetTraceResolver ()->ConnectPrinterToAll (os, TraceContext ());
+}
 Ptr<TraceResolver> 
 NodeList::GetTraceResolver (void)
 {