Assumption that string is bool

[chris081888]

String is being assumed as bool in writeXML

sdstring document::writeXML(const sdstring &rootElem, bool bPretty, bool bTabs, PREWRITEPTR preWriter) <--- should be calling this

sdstring document::writeXML(bool bPretty, bool bTabs, PREWRITEPTR preWriter) <-- Calls this instead

dDoc.writeXML("random string", true);

[VA7ODR]

This should be fixed now.