Add option to include a header in a CSV file.
Add option to include a header in a CSV file.

- modify the povray data file format to include the number of shapes on its first line.

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