Update names of substitution variables related to OpenMP.
Update names of substitution variables related to OpenMP.

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