In bug 148941 the mesa URL for downloads was set to http://people.freedesktop.org/~brianp/mesa because at that time the only way for downloading Mesa was via ftp and that caused issues with some firewalls.
Now the Mesa project offers the tarballs at https://mesa.freedesktop.org/archive/ which should be preferred to the url from people.freedesktop.org
Created attachment 306142 [details]
Comment on attachment 306142 [details]
Clearing flags on attachment: 306142
Committed r214859: <http://trac.webkit.org/changeset/214859>
All reviewed patches have been landed. Closing bug.