Use gst-python 0.9
* pitivi/bin.py:
* pitivi/discoverer.py:
* pitivi/effects.py:
* pitivi/pitivi.py:
* pitivi/playground.py:
* pitivi/project.py:
* pitivi/settings.py:
* pitivi/sourcelist.py:
* pitivi/timeline.py:
* pitivi/ui/mainwindow.py:
* pitivi/ui/timeline.py:
* pitivi/ui/viewer.py:
Added some debugging output,
commented out gnonlin-specific parts of PiTiVi, which will have to be
removed once gnonlin is ported


git-svn-id: svn+ssh://svn.gnome.org/svn/pitivi/trunk@658 d3729300-e425-0410-8a4c-d956edccc248