There are broken links in the legal/LICENSE file, the URLs to the patent agreements for Microsoft and Adobe lead to a 404 error. The latest document from Microsoft can be found here: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma%20PATENT/Patent%20statements%20ok/ECMA-376%20Edition%202%20Microsoft%20Patent%20Declaration.pdf I haven't been able to find the new document from Adobe.
Thanks for spotting that, should be fixed in r1492247.