Updated track_single to use the new Align struct in Align_track funcalls; cleaned up some unused commented code.
Updated track_single to use the new Align struct in Align_track funcalls; cleaned up some unused commented code.

hussainmkj/sixtracklib,dpellegr/sixtracklib,SixTrack/SixTrackLib,SixTrack/SixTrackLib,dpellegr/sixtracklib,SixTrack/SixTrackLib,hussainmkj/sixtracklib,dpellegr/sixtracklib,SixTrack/SixTrackLib