define ids or paths and use Ant's location magic for filename
resolutions in the XML file.
PR: 11321, 12045
Submitted by: Paul Christmann <paul at priorartisans.com>
git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@273484 13f79535-47bb-0310-9956-ffa450edef68