FindCUDA: Search for libraries in <prefix>/lib/<arch>/nvidida-current.

Ubuntu install the CUDA libraries into a location that is different
than the default location provided by the NVidia installer. So we
teach the FindCUDA package to also find the Ubuntu install location.
Merge topic 'FindCuda_more_search_paths' into next

09f00a6 FindCUDA: Search for libraries in <prefix>/lib/<arch>/nvidida-current.