Make class public

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1554263 13f79535-47bb-0310-9956-ffa450edef68
Remove BufferingWriter - buffered in byte, not char, space.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1554264 13f79535-47bb-0310-9956-ffa450edef68