virt-manager: Small startup error reporting fix

Make sure we import gtk into the global namespace

src/virt-manager.py.in

@@ -294,6 +294,7 @@ def main():
             gobject.set_prgname(appname)
 
         import gtk
+        globals()["gtk"] = gtk
     except Warning, e:
         # ...the risk is we catch too much though
         # Damned if we do, damned if we dont :-)(