4.x
Update Samples
Merge pull request #14666 from ihsan314:file_io_xml_yml
update cpp samples and tutorials
Merge pull request #23736 from seanm:c++11-simplifications
Merge pull request #23341 from TuNanTang:3.4
Merge pull request #16046 from alalek:issue_15990
Merge pull request #23417 from souch:souch-fix-parallel-backend-example
Clean up the Universal Intrinsic API.