JENA-540
Added resetRDFWriterF() and removeWriter()
Updated documentation

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1536294 13f79535-47bb-0310-9956-ffa450edef68
Initial migration of schemagen-maven into Apache Jena SVN as jena-maven-tools subproject

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1536365 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch: upstream/trunk