Eliminating the ned to have certain jars in path while running agent

packaging rvmonitorrt.jar and aspectjweaver.jar with the generated agent.jar.

@seriousamlqz, @yzhang90, please review
@yzhang90, as it is, it will print out an error message and return. Sure I could throw an exception instead, but I don't think that answers @seriousamlqz's original question. Also, after this phase is over, we may want to talk about how we handle exception conditions in general.