This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Looks like it is testing a property, rfa.jar, and if the value is not "no" and if it is set to an existing file, then the file is copied to another directory. (Seems like a lot of work to go through to avoid adding a "failonerror" flag to the copy task)