Do not use prgname for the bundle id because xulrunner

is messing with it. Some activity launch fixes.

lib/sugar/activity/activity.py

@@ -362,7 +362,7 @@ class Activity(Window, gtk.Container):
         return self._activity_id
 
     def get_bundle_id(self):
-        return _sugarbaseext.get_prgname()
+        return os.environ['SUGAR_BUNDLE_ID']
 
     def set_canvas(self, canvas):
         Window.set_canvas(self, canvas)
@@ -624,7 +624,7 @@ class Activity(Window, gtk.Container):
 def get_bundle_name():
     """Return the bundle name for the current process' bundle
     """
-    return _sugarbaseext.get_application_name()
+    return os.environ['SUGAR_BUNDLE_NAME']
     
 def get_bundle_path():
     """Return the bundle path for the current process' bundle