IniParser dump / strDump

- dump write on a StringBuilder provided as param
- strDump uses a local StringBuilder and return a string of the content
Change in case and documentation of xml classes

- [break] getAttributeAsNumber / getAttributeAsBool
- childNodes renamed to children
XmlParser parseString / parseFile

- [break] parseXmlText and parseXmlFile renamed to parseString and
parseFile
- parseString return error on malformed xml text