Description of problem:
When using the ipython mode for matplotlib ('ipython -pylab'), we get a
deprecation warning from pygtk, saying we should use 
'gtk.gdk.threads<bla>' rather than 'gtk.threads<bla>'.


Version-Release number of selected component (if applicable):
0.7.2-3

How reproducible:
Always

Steps to Reproduce:
1. Install ipython, python-matplotlib from Extras
2. Run 'ipython -pylab'
  
Actual results:
A warning when starting and closing ipython

Expected results:
No warning

Additional info:
A patch is attached.