Clean up comments.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1513853 13f79535-47bb-0310-9956-ffa450edef68
Remove 'final' on parameter fields, allowing the object to be used for custom setups.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1513854 13f79535-47bb-0310-9956-ffa450edef68