Fix stuff in the ANCF shell code that related to applied loads. Now gravity seems to work ok.
Fix stuff in the ANCF shell code that related to applied loads. Now gravity seems to work ok.

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