Dispatcher: use the gtk3 toolkit

Signed-off-by: Daniel Narvaez <dwnarvaez@gmail.com>
Acked-by: Simon Schampijer <simon@laptop.org>

src/sugar3/dispatch/__init__.py

@@ -6,4 +6,4 @@ See license.txt for original license.
 Heavily modified for Django's purposes.
 """
 
-from sugar.dispatch.dispatcher import Signal
+from sugar3.dispatch.dispatcher import Signal

src/sugar3/dispatch/dispatcher.py

@@ -4,7 +4,7 @@ try:
 except NameError:
     from sets import Set as set # Python 2.3 fallback
 
-from sugar.dispatch import saferef
+from sugar3.dispatch import saferef
 
 WEAKREF_TYPES = (weakref.ReferenceType, saferef.BoundMethodWeakref)