The Subversion project which you have attempted to access is following projects are no longer available on the Subversion repository server. Most likely it was They were either deemed old/fallow and removed, or is are not currently under active development.
cpp-opensaml1
hashib
java-openid
java-opensaml1
java-openxrd
java-sp
For any questions, please contact the Shibboleth developer's mailing list shibboleth-dev@internet2.edu.