Updated the download page for BCEL 6.0

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/bcel/trunk@1600572 13f79535-47bb-0310-9956-ffa450edef68
Updated the menu link to the Javadoc

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/bcel/trunk@1600574 13f79535-47bb-0310-9956-ffa450edef68