Register task that displays extensions in particular files

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272605 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/defaults.properties

@@ -159,6 +159,7 @@ soslabel=org.apache.tools.ant.taskdefs.optional.sos.SOSLabel
 echoproperties=org.apache.tools.ant.taskdefs.optional.EchoProperties
 splash=org.apache.tools.ant.taskdefs.optional.splash.SplashTask
 serverdeploy=org.apache.tools.ant.taskdefs.optional.j2ee.ServerDeploy
+jarlib-display=org.apache.tools.ant.taskdefs.optional.extension.JarLibDisplayTask
 
 # deprecated ant tasks (kept for back compatibility)
 starteam=org.apache.tools.ant.taskdefs.optional.scm.AntStarTeamCheckOut