examples/c99: Update OpenCL C99 example track_io_opencl to use new NS(BeamMonitor) related API
examples/c99: Update OpenCL C99 example track_io_opencl to use new NS(BeamMonitor) related API

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