Remove unused import of UnsupportedEncodingException and modify javadoc references to that class to use fully qualified name.
Remove unused import of UnsupportedEncodingException and modify javadoc references to that class to use fully qualified name.

git-svn-id: 93ad1b128ef73f61fb131daf820f82551b37ed4a@462772 13f79535-47bb-0310-9956-ffa450edef68

apache/commons-io,apache/commons-io,pimtegelaar/commons-io-test3,apache/commons-io,pimtegelaar/commons-io-test3,pimtegelaar/commons-io-test3