System.err debugging of a problem in Gump

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1514677 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java

@@ -476,6 +476,7 @@ public class JUnitTestRunner implements TestListener, JUnitTaskMirror.JUnitTestR
                         }
                     } catch (ClassNotFoundException e) {
                         // OK, fall back to JUnit 3.
+                        savedErr.println("NOT found");
                     }
                     }
                     junit4 = junit4TestAdapterClass != null;