Just code rearrangement, no other changes.
We don't have different priorities for superclasses anymore.
Change the semantics of GtkProgressBar:text slightly so that it behaves as it did before GTK+ 3. Closes: bgo#654266
This way, we can test more feature of them, in particular check for different errors, which were causing test failures.
his also makes the function conform to its documentation.
We're not able to load that (yet?), but it's useful for producing diffable test dumps.