title: Java SWT: removeAll() in TABLE doesn't delete my buttons on the rows
body: <p>I have a Table with 4 columns, and the fourth is filled with buttons with CHECK style.</p>
  
  <p>The problem is that every time I do a removeAll() for fill the table with other content, the buttons are not being deleted, so I can see the same buttons with the same status in the same rows.</p>
  
  <p>This is my table:</p>
  
  <pre><code>Table membersTable = new Table(clubComposite, SWT.BORDER | SWT.CHECK | SWT.FULL_SELECTION);
  membersTable.setLinesVisible(true);
  membersTable.setHeaderVisible(true);
  membersTable.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
  
  TableColumn tblclmnName = new TableColumn(membersTable, SWT.NONE);
  tblclmnName.setWidth(150);
  tblclmnName.setText("Nombre");
  
  TableColumn tblclmnCommonPhoneNumber = new TableColumn(membersTable, SWT.NONE);
  tblclmnCommonPhoneNumber.setWidth(120);
  tblclmnCommonPhoneNumber.setText("Teléfono");
  
  TableColumn tblclmnCommonMoney = new TableColumn(membersTable, SWT.NONE);
  tblclmnCommonMoney.setWidth(150);
  tblclmnCommonMoney.setText("Participación Habitual");
  
  TableColumn tblclmnPayed = new TableColumn(membersTable, SWT.CENTER);
  tblclmnPayed.setWidth(50);
  tblclmnPayed.setText("Payed"); 
  </code></pre>
  
  <p>And this is the way I'm populating the table, also you can see the buttons:</p>
  
  <pre><code>// populate Table
  for (int i=0; i&lt;50; i++) {
      TableItem tableItem = new TableItem(membersTable, SWT.NONE);                    
      tableItem.setText(new String[] {"person "+i, "610610620", "100"});
  
      Button button = new Button(membersTable, SWT.CHECK);
      button.pack();
      TableEditor editor = new TableEditor(membersTable);
      editor.minimumWidth = button.getSize().x;
      editor.horizontalAlignment = SWT.CENTER;
      editor.setEditor(button, tableItem, 3);
  
      button.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
              //how to know in which row is clicked the checkbox?
          }
      });
  }
  </code></pre>