title: Roundcube install, getting MYSQL_ATTR_FOUND_ROWS fatal error
body: <p>I'm installing Roundcube 0.9.0 on a shared host server. </p>
  
  <p>I have PHP 5.3.8 with PDO activated however when i'm installing roundcube, this is what response I get:</p>
  
  <pre><code>Check DB config
  Fatal error: Undefined class constant 'MYSQL_ATTR_FOUND_ROWS' in /home/neuas/domains/anthonysalvador.info/public_html/webmail/program/lib/Roundcube/rcube_db_mysql.php on line 127
  </code></pre>
  
  <p>I have contacted my host, they turned me away. I contacted Roundcube, they turned me away. Is there something I could be overlooking?</p>
  
  <p>here is the PDO section of the code including the faulty line:</p>
  
  <pre><code>102    protected function dsn_options($dsn)
  103    {
  104    $result = array();
  105
  106    if (!empty($dsn['key'])) {
  107        $result[PDO::MYSQL_ATTR_KEY] = $dsn['key'];
  108    }
  109
  110    if (!empty($dsn['cipher'])) {
  111        $result[PDO::MYSQL_ATTR_CIPHER] = $dsn['cipher'];
  112    }
  113
  114    if (!empty($dsn['cert'])) {
  115        $result[PDO::MYSQL_ATTR_SSL_CERT] = $dsn['cert'];
  116    }
  117
  118    if (!empty($dsn['capath'])) {
  119        $result[PDO::MYSQL_ATTR_SSL_CAPATH] = $dsn['capath'];
  120    }
  121
  122    if (!empty($dsn['ca'])) {
  123        $result[PDO::MYSQL_ATTR_SSL_CA] = $dsn['ca'];
  124    }
  125
  126    // Always return matching (not affected only) rows count
  127    $result[PDO::MYSQL_ATTR_FOUND_ROWS] = true;
  </code></pre>