libthrift.jar has source files in it

libthrift.jar has both .class and .java files in it.

When i run <javadoc> task on my project and libthrift is on the classpath, javadoc attempts to build javadoc for the libthrift classes. This means i need to pull more dependencies into my projects (for all of libthrifts dependences) to run javadoc, even if my product doesn't use that part of the libthrift code. It would be nice if the jar was just execution artifacts, and a separate libthrift-sources.jar made available. Thanks.