GtkImageMenuItem's stock stuff is not binding-friendly

[ERDI Gergo <cactus cactus rulez org>]

To create a stock GtkImageMenuItem, you have to use
gtk_image_menu_item_new_from_stock, which does a _lot_ of things, and
which doesn't seem to be accessable via any other route.

My advice is to have a use_stock property just like in gtkbutton.

-- 
   .--= ULLA! =---------------------.   `We are not here to give users what
   \     http://cactus.rulez.org     \   they want'  -- RMS, at GUADEC 2001
    `---= cactus cactus rulez org =---'
A dinoszauruszok sem voltak nagy allatok, csak nem voltak betomoritve