Correction to be able to compile using the directive PRINT_KERNEL_RUN_TIME
added cv::LUT to T-API
core: added cv::error with CV_NORETURN attr
fixed many bugs related to Mat::getUMat(), asynchronous kernel execution etc. Also, played a bit with ocl::cvtColor vs cv::cvtColor performance
Using cv::String instead of std::string.
fixed several compile errors/warnings; reacted on the PR comments
trying to guess and fix strange failure in core test
another attempt to fix Core_UMat.getUMat test
yet another attempt to make Core_UMat.getUMat test work
try to eliminate failure in opencv_imgproc_test
Merge pull request #1886 from ilya-lavrenov:tapi_lut
still trying to fix failure in opencv_test_imgproc
Ensure compilation to Javascript with Emscripten
hopefully, now opencv_test_imgproc should pass
Merge pull request #1882 from philippefoubert:branch_ocl_instrumentation
dummy commit to rerun pre-commit tests
ts: catch & append general exceptions into log
Merge pull request #1901 from vpisarev:ocl_svm3
Merge pull request #1890 from alalek:ts_fix_seh_exceptions_handling
Merge pull request #1904 from severin-lemaignan:emscripten