I've removed the embedded Ant in HEAD. I rewrote build.bat and build.sh to call a separately installed Ant. Instructions will be given on the command-line if Ant cannot be found.
Now that ant.jar has been removed, the project is slightly less friendly to eclipse since ant.jar is required by the files in org.apache.fop.tools.anttasks.
It is easily solved locally, I just wanted to point it out.