2008/02/01 16:23:33 mst 1.4.74.1: interface change: SfxObjectShell::GetPreviewMetaFile
- sfx2/inc/sfx2/objsh.hxx,
  sfx2/source/doc/{objcont.cxx,objstor.cxx,sfxbasemodel.cxx}:
  + SfxObjectShell::GetPreviewMetaFile returns a boost::shared_ptr;
    likewise SfxObjectShell::CreatePreviewMetaFile_Impl
- sfx2/source/inc/preview.hxx, sfx2/source/doc/new.cxx:
  + SfxPreviewBase_Impl stores its GDIMetaFile member in a boost::shared_ptr