Update to Commons IO 2.4 and run UCDetector over the copied classes

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1456963 13f79535-47bb-0310-9956-ffa450edef68
Expose new rotate method via JMX

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1456970 13f79535-47bb-0310-9956-ffa450edef68