Dbg:Add CallableTracer for callables post()ed to boost.asio

This class and its macro allow us to trace the invocation of
callbacks as they're invoked by Boost.asio.

smocore/include/componentThread.h

@@ -49,6 +49,7 @@ public:
 	boost::asio::io_service& getIoService(void) { return io_service; }
 
 	static const std::shared_ptr<ComponentThread> getSelf(void);
+	static bool tlsInitialized(void);
 	static std::shared_ptr<MarionetteThread> getMrntt();
 
 	typedef void (mainFn)(ComponentThread &self);