* Adding CMake script to check if pylint is installed
* Adding Pylint config file (to choose the tests that are enabled)
* Adding CMake script to samples/python/tutorial_code

Testing: bad-indentation, mixed-indentation, unnecessary-semicolon, unused-variable

CUDA9 build fixed, added detection (#9418)

* CUDA9 build fixed, added detection

* Replacing deprecated __shfl_xxx with __shfl_sync, fixing bogus CUDA9 warnings

OpenCL runtime does not require OpenCL development file (libOpenCL.so),
just the "run" library (so.1).

This patch searches for the run library (so.1) if the dev library (.so)
is not found.

Web search shows that this error has been present since at least 2015
http://answers.opencv.org/question/80532/haveopencl-return-false/Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>

- Optimizations set change. Now IPP integrations will provide code for SSE42, AVX2 and AVX512 (SKX) CPUs only. For HW below SSE42 IPP code is disabled.
- Performance regressions fixes for IPP code paths;
- cv::boxFilter integration improvement;
- cv::filter2D integration improvement;

It should handle bool value not only of "true" but also of "TRUE" and "True".

Fix doxygen comment in BFMatcher

numpy 1.13.0+

- '-fvisibility' flag was updated
- PVAPI library detection was changed