Feature request: look up separators by locale

Hi there!

It appears that the currency module, for every kind of currency, just uses "," as the decimal separator and " " as the group separator.

It might be nice if the module could look up the correct separator value based on locale, for example using PHP's localeconv function:

www.php.net/manual/en/function.localeconv.php

From a cursory search, it appears this might not work very well for Windows servers (?). Anyway, there could be some complications supporting Windows and Linux servers both.

But if you could do it, a Hikashop site might look a little better out of the box to international customers.

Kind regards,

-Henry