2007/12/07 17:45:39 mst 1.6.82.1: refactoring to use XDocumentProperties instead of XDocumentInfo
on document import:
- xmloff/inc/xmloff/xmlimp.hxx, xmloff/source/core/xmlimp.cxx:
  + make the service factory member protected
  + rename member isGraphicLoadOnDemmandSupported to something
    less orthographically questionable
  + add method SetStatistics, to eventually replace SetStatisticAttributes
- xmloff/inc/MetaImportComponent.hxx,
  xmloff/source/meta/MetaImportComponent.cxx:
  + refactor to use XDocumentProperties instead of XDocumentInfo
  + move SvXMLMetaDocumentContext over to header xmlmetai.hxx
- xmloff/inc/xmloff/xmlmetai.hxx, xmloff/source/meta/xmlmetai.cxx:
  + new class XMLDocumentBuilderContext, to eventually replace
    SfxXMLMetaContext
  + SvXMLMetaDocumentContext virtually inherits from SvXMLImportContext