Fix calculation of velocity of body-fixed points.
Fix calculation of velocity of body-fixed points.

armanpazouki/chrono,projectchrono/chrono,tjolsen/chrono,dariomangoni/chrono,jcmadsen/chrono,amelmquist/chrono,Bryan-Peterson/chrono,dariomangoni/chrono,amelmquist/chrono,andrewseidl/chrono,hsu/chrono,Milad-Rakhsha/chrono,projectchrono/chrono,amelmquist/chrono,jcmadsen/chrono,projectchrono/chrono,Milad-Rakhsha/chrono,projectchrono/chrono,armanpazouki/chrono,rserban/chrono,jcmadsen/chrono,hsu/chrono,Bryan-Peterson/chrono,PedroTrujilloV/chrono,armanpazouki/chrono,armanpazouki/chrono,armanpazouki/chrono,PedroTrujilloV/chrono,dariomangoni/chrono,dariomangoni/chrono,PedroTrujilloV/chrono,rserban/chrono,tjolsen/chrono,rserban/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,projectchrono/chrono,rserban/chrono,rserban/chrono,jcmadsen/chrono,andrewseidl/chrono,amelmquist/chrono,projectchrono/chrono,armanpazouki/chrono,hsu/chrono,dariomangoni/chrono,amelmquist/chrono,PedroTrujilloV/chrono,PedroTrujilloV/chrono,dariomangoni/chrono,andrewseidl/chrono,jcmadsen/chrono,jcmadsen/chrono,amelmquist/chrono,jcmadsen/chrono,andrewseidl/chrono,Bryan-Peterson/chrono,rserban/chrono,tjolsen/chrono,tjolsen/chrono,rserban/chrono,hsu/chrono,hsu/chrono,tjolsen/chrono,Milad-Rakhsha/chrono,Bryan-Peterson/chrono,Bryan-Peterson/chrono,andrewseidl/chrono,Milad-Rakhsha/chrono