Changed behavior of the entire database selection process. A real "upgrade"/"don't touch the database" option was added, and the old options unconditionally delete the database.

<?php
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
for ( $i = 0; $i < 8; $i++ )
  echo $chars{ rand(0, strlen($chars)-1) };