2.4.4:

* Document: Added load_from_data().
* App_WithDoc: Added open_document_from_data().
  These can be used when the document's data is not received via 
  a URI. For instance, over the network via a special protocol.
  (Murray Cumming)
* Build: Don't require gnome-vfs on Windows (for the MIME type), 
  to simplify the build, and make some other fixes for the Windows 
  build.
  (Armin Burgmeier)