Bugfix for ratings extension in TYPO3

// There seems to be a problem with the ratings extension in TYPO3
// (http://typo3.org/extensions/repository/view/ratings/current/)
//
// The existing code tries to the DBAL-enabled method exec_UPDATEquery to update the table
// but it would appear that this method does not like "column+1" values in the updateFields array.
// Therefore I replaced a couple of lines in method updateRating():


// line ~142-147:
$GLOBALS['TYPO3_DB']->exec_UPDATEquery('tx_ratings_data', $dataWhere,
    array(
        'vote_count' => 'vote_count+1',
        'rating' => 'rating+' . intval($this->rating),
        'tstamp' => time(),
    ), 'vote_count,rating');

// replace with the following code:
$updateSql = 'UPDATE tx_ratings_data SET vote_count = vote_count+1, rating=rating+' . $this->rating . ', tstamp =' .time() . " WHERE " . $dataWhere;
$GLOBALS['TYPO3_DB']->sql_query($updateSql);