Qutex: Add gridlock detection wireframing

This is the basic wireframing required to enable us to detect
gridlocks among requests.

smocore/serializedAsynchronousContinuation.cpp

@@ -57,6 +57,17 @@ SerializedAsynchronousContinuation<OriginalCbFnT>
 	return false;
 }
 
+template <class OriginalCbFnT>
+template <class InvocationTargetT>
+bool
+SerializedAsynchronousContinuation<OriginalCbFnT>
+::LockerAndInvoker<InvocationTargetT>
+::traceContinuationHistoryForGridlockOn(Qutex &firstFailedQutex)
+{
+	// Empty implementation - to be filled in later
+	return false;
+}
+
 template <class OriginalCbFnT>
 template <class InvocationTargetT>
 void