Places sidebar eject button

[Stefano Teso <stefano teso gmail com>]

Hi,

I forgot to say that I uploaded a preliminary patch [1] for bug 343839,
adding an `eject' button to the places sidebar.

Cut'n pasting from the comment --

Problems with the patch:

 * Preliminary, unfinished, experimental, etc.

 * It modifies NautilusCellRendererPixbufEmblem to emit an "activated" signal
when clicked and adds the corresponding public API. Of course, a separate
GtkCellRenderer class should be created for the same purpose, but it seemed
overkill for such a preliminary, unfinished, experimental, etc. patch.

 * The eject button doesn't react to mouse enter/leave events; this doesn't
tell the user that the button is an active GUI element.

 * Since I couldn't find a media-eject GTK stock icon, I used GTK_STOCK_REMOVE
instead for the CellRenderer pixbuf, so the eject button doesn't look right.

----
Stefano

[1] http://bugzilla.gnome.org/show_bug.cgi?id=343839