Correct typos in configuration samples: XML comments start with '<!--'.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1446650 13f79535-47bb-0310-9956-ffa450edef68
setBatchingAllowed() will throw IOE in next spec iteration

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1446681 13f79535-47bb-0310-9956-ffa450edef68
TODO: IOE on sending close message
Solution: Rethrow

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1446683 13f79535-47bb-0310-9956-ffa450edef68