libbonoboui api addition

[Michael Meeks <michael trna ximian com>]

Hi there,

	A chunk of code currently uses bonobo_main to activate bonobo
and then run the mainloop, sadly code also uses gtk_main_quit to quit.
bonobo_main cannot use gtk_main, since it's not linked to gtk;
consequently we need a new method:

void bonobo_ui_main (void);

	that will do the activate and run gtk_main for you, otherwise
people will clutter their code with lots of bonobo_activate calls and
get confused.

	Regards,

		Michael.

-- 
 mmeeks gnu org  <><, Pseudo Engineer, itinerant idiot