Added a toString() for debugging

src/checkstyle/com/puppycrawl/tools/checkstyle/MyCommonAST.java

@@ -57,4 +57,11 @@ public class MyCommonAST
     {
         return mColumnNo;
     }
+
+    /** @return a string representation of the object **/
+    public String toString()
+    {
+        return "{Text = '" + getText() + "', Line = " + getLineNo()
+            + ", Column = " + getColumnNo() + "}";
+    }
 }