Remove two "set" kernel call
Update CMakeLists.txt
Also test for target.
Optimize OpenCL version function BackgroundSubstractionMOG2
Fixed CMake issue with FFMPEG videoio configuration
Use FFMPEG capture only if HAVE_FFMPEG flag is defined.
Combined counter and corner buffers into one
Merge pull request #3277 from a-wi:CMake_FFMPEG_config_v3
Added performance test for OCL version of HoughLines and HoughLinesP
Move cmake config files too on non-windows hosts.
Merge pull request #3278 from akarsakov:ocl_houghlines_perf_test
Merge pull request #3223 from vbystricky:oclopt_BgSubMOG2
Remove ATL dependency from MSMF capture code.

Use _com_ptr_t instead of CComPtr in ComPtr wrapper to avoid ATL dependency.
Merge pull request #3216 from xantares:patch-1
Documentation fix on py_tutorials
Merge pull request #3293 from a-wi:MSMF_remove_ATL_dependency_v3
Merge pull request #3304 from eltermann:master
Merge pull request #3210 from akarsakov:ocl_gftt_opt