title: Incorrect mapping of mysql tinyint(2) as boolean with doctrine
body: <p>I reverse engineered my database with symfony2 and doctrine with commands :</p>
  
  <pre><code>php app/console doctrine:mapping:convert
  php app/console doctrine:mapping:import
  php app/console doctrine:generate:entities
  </code></pre>
  
  <p>But my field was mapped as boolean instead of tinyint(2).</p>
  
  <p>Why it is mapping as boolean?</p>