keyboard/mouse navigation changes

[Alexander Larsson <alexl redhat com>]

All right. 

I've implemented ctrl-alt-up/down to open+close current window, and
shift-doubleclick which open+close current (of the icon you clicked on
only, not the selection, since shift-click can change the selection).
To use the keyboard navigation you have to disable the keys from
metacity.

I've also added shift-click range selection to the icon view, fixed up
some details wrt selection, and synchronized the list view
selection/activation/drag behaviour with the icon view.

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 Alexander Larsson                                            Red Hat, Inc 
                   alexl redhat com    alla lysator liu se 
He's a leather-clad one-eyed boxer in drag. She's a virginal green-skinned 
snake charmer in the wrong place at the wrong time. They fight crime!