NVidia 375 once again changed how OpenCL programs on Ubuntu 16.04 need to be invocated.

1. Do the bumblebee dance
2. Check that /etc/OpenCL/vendors/nvidia.icd contains libnvidia-opencl.so.1
3. Maybe link libOpenCL.so to the expected location to enable standard OpenCL programs like darktable: sudo ln -s /usr ...

After struggling for two days to get OpenCL and Cuda working on my new shiny Kubuntu 15.04 and none of the usual tricks working, here are my notes:

1. Do the bumblebee dance
2. Check that /etc/OpenCL/vendors/nvidia.icd contains libnvidia-opencl.so.1
3. Maybe sudo ln -s /usr/lib ...