cudev: Add __shfl_down implementation for long long and unsigned long for CUDA Tookit < 9.0#3963

cudawarped wants to merge 1 commit intoopencv:4.xopencv/opencv_contrib:4.xfrom

cudawarped:fix_shufl_down_on_cc_lt_70cudawarped/opencv_contrib:fix_shufl_down_on_cc_lt_70Copy head branch name to clipboard