new feature of key view needed

[Yang Hong <yangh ntjx org>]

in my case, I have several file/folders in one place, example:

gtk-icon , gtk-themes, gtk-docs

when view this folder in nautilus iconview, I pressed "g", then then 
"gtk-icons" was selected, then I press "g" again, I want the next item 
which's name is started with "g" to be selected, and then I press "g" 
the third time, the Third item could be select.

the current status is that just the first match file/folder could be 
select whatever how much time I had pressed.