Logs of DaVinci examples, tests and tutorials should ideally contain no WARNING

Indeed WARNING messages are something that should be there in instances where user eyes are required. I would then advocate that examples and alike should ideally have none since they are meant to show best practices. In practice, I know that some of the warnings won't be trivial to get rid of quickly, especially that some come from code upstream. Still, it would be good to track them down and discuss with RTA in particular.

... at which point warnings truly become something to look at :-).