They say Laziness is the mother of all invention, well it strikes again. I've created another Ant build file for use with Doug Hughes Reactor. The build file will download the lastest set of Reactor files the Doug's SVN server, which at the moment has just reached a beta candidate.The code for build.xml is below. To run the file from Eclipse just put the file into any project, update line 9 (the <project> tag) with your Reactor folder location, right-click and then select "Run As -- Ant Build".
Download the latest Reactor build