Sorry, I assumed you were talking about trunk. We haven't made any major build changes on the 13.2 release branch, so you won't see any of these new files there.

You should probably just put your build.xml file back in your module directory and debug why invoking it causes an error. When you move to 13.3, you may need to adjust your build.xml slightly, but you'll be able to continue with this approach if you're comfortable with it.

Adam