Fix some do loop endings, labels, char definitions, and a float constant in sixtrack.s
Fix some do loop endings, labels, char definitions, and a float constant in sixtrack.s

SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack