a weird thing in the source code comments

This url [in the source code](https://github.com/matplotlib/matplotlib/blob/master/lib/matplotlib/artist.py#L31) is out of control

`http://groups.google.com/groups?hl=en&lr=&threadm=mailman.5090.1098044946.5135.python-list%40python.org&rnum=1&prev=/groups%3Fq%3D__doc__%2Bauthor%253Ajdhunter%2540ace.bsd.uchicago.edu%26hl%3Den%26btnG%3DGoogle%2BSearch`
