title: Increase date range Symfony2
body: <p>Hi i have a simple problem but can't find a solution :</p>
  
  <p>I have this </p>
  
  <pre><code>-&gt;add('dateofBirth', 'date', array (
              'widget' =&gt; 'choice',
              'format' =&gt; 'dd-MM-yyyy',
              'pattern' =&gt; '{{ day }}-{{ month }}-{{ year }',
              'years' =&gt; range(1850 , date('Y'))
  
  
              ))
  </code></pre>
  
  <p>With this the years go from 1902 to now. It seems like there is a predefined date range. My code works because with a year >1902 it takes it into account. Is it possible to change this?</p>
  
  <p>I found a DateTypeTest class in /vendors with this code :</p>
  
  <pre><code>  public function testYearsFor32BitsMachines()
      {
          if (4 !== PHP_INT_SIZE) {
              $this-&gt;markTestSkipped(
                  'PHP must be compiled in 32 bit mode to run this test');
          }
  
          $form = $this-&gt;factory-&gt;create('date', null, array(
              'years' =&gt; range(1900, 2040),
          ));
  
          $view = $form-&gt;createView();
  
          $listChoices = array();
          foreach (range(1902, 2037) as $y) {
              $listChoices[] = new ChoiceView($y, $y, $y);
          }
  
          $this-&gt;assertEquals($listChoices, $view['year']-&gt;vars['choices']);
      }
  </code></pre>
  
  <p>And i tried to change the 1902 date, even if touching to the vendors isnt really a good idea. But it didn't change anything. Maybe because i'm in prod ?
  Its the only occurence of 1902 i can find in my symfony folder</p>
  
  <p>thx for your help</p>