GtkText and GtkEntry don't emit move cursor signal

[50191914 ee cityu edu hk]

Hello,

I find that "move cursor" signal is not emitted for
gtk_entry_move_cursor
and gtk_text_move_cursor  in both gtk 1.2 and 1.3.

It is useful for some programmer to add a signal hander to "move cursor"
especially for application like Text Editor

(btw,in general,should GtkSomeWidget emited signal "foo bar" in function
gtk_some_widget_foo_bar if it created signal "foo bar"? I think that
it is useless if a signal is created by it is never emitted)