Can JRJC be made portable?

[Alexis Ruegger]

I have a tool that I can add features to by adding .java files and .jar files as parameters to an exe. 
I would like to add a feature that does some Jira searches and acts based on the results. I've had success adding this using the jira python module , but I've hit a use case where it would be much better to do it from within the .java and .jar-based process. 

Is there a way I can get or create a .jar file, or a directory of .jar files to encapsulate a "portable" JRJC? 

Because of this use case, Maven and other dependency management solutions are not practical.