Warning message when no testng.xml was found in the jar file.
diff --git a/src/main/java/org/testng/TestNG.java b/src/main/java/org/testng/TestNG.java
index 2bf1f00..8609ae2 100644
--- a/src/main/java/org/testng/TestNG.java
+++ b/src/main/java/org/testng/TestNG.java
@@ -349,6 +349,8 @@
         }
       }
       if (! foundTestngXml) {
+        Utils.log("TestNG", 1,
+            "Couldn't find a testng.xml in the jar file, running all the classes");
         XmlSuite xmlSuite = new XmlSuite();
         xmlSuite.setVerbose(0);
         xmlSuite.setName("Jar suite");