Magento: change the required / minimum password length

<?php
$URL="http://" . $_SERVER['SERVER_NAME'] . "/sites/default/files/magento/password/validation.js.diff";
echo "

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>

Links
http://www.magentocommerce.com/boards/201210/viewthread/18197/#t62474