[Bug 35488] gnome-keybinding-properties doesn't accept Win/Super/Mod4 as a modifier

[Dimos Dimoulis]

Public bug reported:
https://launchpad.net/malone/bugs/35488

Affects: control-center gnome-control-center (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
I tried to replace <Control><Alt>d as a shortcut for "show desktop" with
<Super>d (aka win-key, mod4), but it accepted Super_L as a single key
rather than a modifier. Setting this in gconf worked.