Make -msse2 a user option, and don't force -O3
Make -msse2 a user option, and don't force -O3

axeisghost/DART6motionBlur,dartsim/dart,axeisghost/DART6motionBlur,axeisghost/DART6motionBlur,dartsim/dart,dartsim/dart,dartsim/dart,dartsim/dart