Issues using a path

[Eric Wood]

When I create the following path reference:
 
  <path id="projectSpecificLibs" >
            <fileset dir="${dir.release.area}">
 
                 <!-- GOOD JARS: elements exist in the file system -->
                <include
name="com/llbean/CMN_Infrastructure/llbinfrastructure/1.2.0/llbinfrastru
cture-1.2.0.jar" />
                <include
name="com/llbean/CMN_Security/llbsecurity/2.0.0/llbsecurity-2.0.0.jar"
/>

                <!-- BAD JAR: element does NOT exist in the file system
-->
                <include name="com/llbean/bogus.jar" />
           <fileset>
  </path>
 
Only the two good jars are found in the path reference.  I want to know
if an <include name="... /> statement contains an invalid path to an
element.  I can't process through the path reference later, because it
only places the elements in the path if they are found, so I can't step
through it to determine whether or not they exist. Is there another
option to have ANT tell we when I have included a non-existing entry in
a path reference?
 
Thanks, Eric