tests/sixtracklib/cuda: update the NS(Buffer) related CUDA unit-test to make use of the new C-Wrapper function(s)
tests/sixtracklib/cuda: update the NS(Buffer) related CUDA unit-test to make use of the new C-Wrapper function(s)

SixTrack/SixTrackLib,SixTrack/SixTrackLib,SixTrack/SixTrackLib,SixTrack/SixTrackLib