These changse have been addressed in the Java Codec manual.
Moved all of the types from package: rlglue to org.rlcommunity.rlglue
In the big picture, the names all fit in to the larger scheme that we've been working on for other projects. In the small picture, this is going to break compatibility in several ways.
It should be easy for someone to create (I might do it), a 2.x backwards-compatible codec that uses augmented versions of the old types. We'll see.