Use @type in pref to rdf:type

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1596897 13f79535-47bb-0310-9956-ffa450edef68
Missing fn:string-after/string-before named functions

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1596898 13f79535-47bb-0310-9956-ffa450edef68