Liblicense has licenses! 376 of them...
GSoC license RDF systemPrepping for the 0.1 release, I've generated RDF descriptions of all CC licenses in all available jurisdictions, as well as the GPL, LGPL, and Public Domain.
Available here:
https://cctools.svn.sourceforge.net/svnroot/cctools/liblicense/trunk/licenses/
Each license, if applicable, has all the attributes laid out on the wiki, including localization. One problem, however, is getting localized descriptions of the licenses. That isn't available at https://cctools.svn.sourceforge.net/svnroot/cctools/i18n/trunk/i18n/
Licenses were generated with this python script, which reads the relevant information from creativecommons.org and cctools svn.