Spanish patch

Here is a patch to x00.php to improve spanish transliteration.

Here are the changes:

// Overrides for Spanish input
$variant['es'] = array(
0xE1 => 'a',
0xE9 => 'e',
0xED => 'i',
0xF3 => 'o',
0xFA => 'u',
0xF1 => 'n',
);