- SQL logging channel and archiving strategy

- row formatting refactored
- affected row count for insert, delete and update returned from Statement::execute()
- internal SQL string formatting capability using Poco::format()

Data/include/Poco/Data/Binding.h

@@ -99,7 +99,9 @@ public:
 	void reset ()
 	{
 		_bound = false;
-		getBinder()->reset();
+		AbstractBinder* pBinder = getBinder();
+		poco_check_ptr (pBinder);
+		pBinder->reset();
 	}
 
 private: