DERBY-6552 The public api includes methods inherited from superclasses which aren't in the public api and so have no javadoc comments

Patch (derby-6552-link-fixes) to make it possible to run "ant
publishedapi" behind a firewall: one can manually download the
package-list files of Java SE 8 and J2EE 7 into to directories that
javadoc can pick up if it can't use the URLs.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1603548 13f79535-47bb-0310-9956-ffa450edef68