i18n V2.2 released

This is a maintenance release, with only minor updates:

# Updated code to work with PHP 5.1.0
# Added support for SQLite 3 databases using the PDO Object (enabled per default in PHP 5.1.0)
# The currency method of the I18Nnumber class now takes an additional argument $position which can be „before“ or „after“ (string) to position the currency symbol before or after the numeric value. It only works if $notation is „symbol“. You can set the default position in the l10n.ini file, but you can override it with the argument in the function.
# I18Nlocale class now has a __toString() function which outputs the locale.
# I18Ntranslator class now implements the Iterator Interface, so if you use the object with foreach, it iterates though the translationtable (foreach ($translator as $translation_string => $translation)).