make SixTest/bin/read90 a symlink to SixTest/read90/read90
make SixTest/bin/read90 a symlink to SixTest/read90/read90

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