Update XDoclet and XJavaDoc (XJavaDoc is no longer a singleton)

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@274537 13f79535-47bb-0310-9956-ffa450edef68

proposal/xdocs/src/org/apache/ant/xdoclet/AntSubTask.java

@@ -152,7 +152,8 @@ public abstract class AntSubTask extends TemplateSubTask
 
     protected void startProcess() throws XDocletException
     {
-        Collection classes = XJavaDoc.getInstance().getSourceClasses(false, processInnerClasses());
+        XJavaDoc xjd = new XJavaDoc();
+        Collection classes = xjd.getSourceClasses(false, processInnerClasses());
 
         super.startProcess();
     }