Enable C++11 support by default.
Enable C++11 support by default.

Note that this option will eventually be removed and C++11 support always required.

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