fix head as DefBase.java is a new file

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@275080 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/DefBase.java

@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
+ * Copyright (c) 2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without