Add QutexAcquisitionHistoryTracker; integrate plumbing

We add the new Qutex acquisision history tracker that allows us
to dynamically detect qutex gridlocks. We've integrated it into
LockerAndInvoker::operator() in a preliminary way.

We also moved all of the trace*ForGridlockOn() methods into the
new QutexAcquisitionHistoryTracker singleton class. They're
more appropriately located there. They're still unimplemented
though.

smocore/CMakeLists.txt

@@ -13,6 +13,7 @@ add_library(smocore STATIC
     lockerAndInvokerBase.cpp
     lockSet.cpp
     serializedAsynchronousContinuation.cpp
+    qutexAcquisitionHistoryTracker.cpp
 
     # Body
     body/body.cpp