i18n version 2.1b2 released

* Changed some code so the classes dont throw an error with PHP5 RC2.
* PHPdoc comments are back in.
* UTF-8 is used all the time now. This could cause some problems with different translation modes:
o SQLite needs to be compiled with UTF-8 support to work correctly
o MySQL requires at least version 4.1.1a and some editing of your My.ini file.
* Replaced most string functions with the equal mb functions, so you need to enable mbstring in your php.ini file.
* Support for MSSQL has been dropped. Maybe will come back at a later point.
* Support for XML files has been added (using simpleXML). Classes arent finished though (I18NtranslatorXMLExtended not implemented).