I've been playing fast and loose with the tags because I've known we're going to switch to Git for 1.4. So I haven't really been bother to keep up with it.
Check the history for the
maptool project and read the comments. I include a comment that says "1.3.bXX" so that's the revision to grab. Maybe I'll go back and add tags for those revisions but don't count on it.

I don't know why your XML didn't work, as the content seems right. I can only expect it's the position within the file. In any case, that's the wrong way to handle it. If you look under
maptool/resources/bin/ you'll find some sample XML files that can be placed in the
.maptool/ directory and will be read and integrated at run time.
In some future version the logging will have a GUI front-end so that it can be changed from inside MT...
JAR files can be built using the ANT
build.xml file in the top level project directory. You can run the ANT build from inside Eclipse by right-clicking on the
build.xml file and choosing
Run As > Ant Build... then choosing the
generate-jar target. Look in the
maptool/tmp/ directory (part of the project space) for the results.
If you're interested in modifying the source in some way, it might behoove you to speak up prior to spending a lot of time on something. There's a good chance someone here can give you a quick answer to your question. And the question will have been answered for other developers that come after you as well.
And if not, at least you didn't waste more than 5 minutes posting the question.
