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

Correction from James Bigler to add the <prefix>/lib/<arch>/nvidida-current to
the system find_library call which is used after the user libraries
have been searched.
Merge topic 'FindCuda_more_search_paths' into next

07646de FindCUDA: Search for libraries in <prefix>/lib/<arch>/nvidida-current.