From: Tom Mueller <tom.mueller_at_oracle.com>
Date: Mon, 27 Jun 2011 08:48:16 -0500

IIRC, the root cause of this is that the API to the Java compiler requires
passing in a classpath rather than a classloader.

Note that the system-jar-includes parameter does permit including a
directory name. So if the JAR files are in predictable directories,
then maybe this is a solution.

Tom