libgsf 1.7.2

[Jody Goldberg <jody gnome org>]

At this point the OLE and Zip inputs and outputs can be considered
stable and ready for use in production code.  The xml import wrapper
is also at a point where the api is stable and should be usable for
real applications.  Drop your XML-DOM interfaces now don't delay !
Convert now and you'll get a free gift, a semi tested xml export
interface.

Dom:
        * Extend gnome-vfs support to handle uris
        * Ensure large reads and writes happen

Jody:
        * Start work on some simplified xml export utilities.
        * Extend xml import facilities to support namespaces.
        * Catch invalid OLE files with cycles.
        * Fix exporting OLE files larger than 6.8 Meg

Jon K?re:
        * Only unset valid GValues when reading msole properties.

Morten:
        * Fix xml save problem.

Tor Lillqvist:
        * Tweaks for the win32 build.