Please describe the problem:
If you connect a handler to a GtkMenu on the container::add signal, the handler
never gets called when you add a new menu item into the menu.  The remove
signal, however, does get emitted.

Steps to reproduce:
1. Create a GtkMenu
2. Connect to the container::add signal
3. Add a menu item to the menu
4. signal handler never gets called


Actual results:
The signal handler never gets called.

Expected results:
The signal handler to get called.

Does this happen every time?
Yes

Other information:
I will be adding a small proof of concept application...