Deprecate the old designer's classes

pmd-core/src/main/java/net/sourceforge/pmd/util/designer/CodeEditorTextPane.java

@@ -8,6 +8,7 @@ import javax.swing.JTextPane;
 
 import net.sourceforge.pmd.lang.ast.Node;
 
+@Deprecated
 public class CodeEditorTextPane extends JTextPane implements LineGetter {
 
     private String[] getLines() {

pmd-core/src/main/java/net/sourceforge/pmd/util/designer/CreateXMLRulePanel.java

@@ -24,6 +24,7 @@ import net.sourceforge.pmd.PMD;
  * This class is responsible for creating the contentpanel for the Create Rule
  * XML Frame.
  */
+@Deprecated
 public class CreateXMLRulePanel extends JPanel implements ActionListener {
 
     private JTextField rulenameField = new JTextField(30);

pmd-core/src/main/java/net/sourceforge/pmd/util/designer/DFAPanel.java

@@ -29,6 +29,7 @@ import net.sourceforge.pmd.lang.dfa.DataFlowNode;
 import net.sourceforge.pmd.lang.dfa.VariableAccess;
 import net.sourceforge.pmd.util.StringUtil;
 
+@Deprecated
 public class DFAPanel extends JComponent implements ListSelectionListener {
 
     public static class DFACanvas extends JPanel {

pmd-core/src/main/java/net/sourceforge/pmd/util/designer/Designer.java

@@ -124,6 +124,7 @@ import net.sourceforge.pmd.lang.symboltable.Scope;
 import net.sourceforge.pmd.lang.symboltable.ScopedNode;
 import net.sourceforge.pmd.lang.xpath.Initializer;
 
+@Deprecated
 public class Designer implements ClipboardOwner {
 
     private boolean exitOnClose = true;

pmd-core/src/main/java/net/sourceforge/pmd/util/designer/LineGetter.java

@@ -4,6 +4,7 @@
 
 package net.sourceforge.pmd.util.designer;
 
+@Deprecated
 public interface LineGetter {
     String getLine(int number);
 }