[Cin] Test rendering whit x265

[Andrea paz]

The build was done without errors.
But I'm not good at testing a patch, with 69 patches I really don't
know what to do.
Maybe it would be better to introduce the Cinelerra-CV method, in
which you test single patch (or at least on a single feature), and
then the result of the tests is discussed and possibly implemented.
Only after that we move on to other patches....
What do you think?