use QPair instead of hand-made double QString
use QHash to replace QMap
removed unused KoXmlStream
made nsURI and name using index
use conservative growth strategy for item collections
avoid invalid deallocation on null node
shifted most code from KoXmlHandler to KoXmlPackedDocument
fixed potential leak during node loading
minor speed-up on some constructors


svn path=/trunk/koffice/; revision=603118