Build a stupid jar.

Who thought this was a good idea?
"Note: The Class-Path header points to classes or JAR files on the local
network, not JAR files within the JAR file or classes accessible over
internet protocols. To load classes in JAR files within a JAR file into
the class path, you must write custom code to load those classes. For
example, if MyJar.jar contains another JAR file called MyUtils.jar, you
cannot use the Class-Path header in MyJar.jar's manifest to load classes
in MyUtils.jar into the class path."