RFC: New category XFCE for menu-spec

[Samuli Suominen]

I've started seeing these with latest Xfce git:

* /usr/share/applications/example.desktop: value 
"XFCE;GTK;Settings;DesktopSettings;X-XFCE-SettingsDialog;X-XFCE-SystemSettings;" 
for key "Categories" in group "Desktop Entry" contains an unregistered 
value "XFCE"; values extending the format should start with "X-"

And I've discussed it at #xfce-dev on Freenode with 2 developers and the 
response was that this won't be changing and it's correct.

Therefore I'm suggesting XFCE to be included in the

http://standards.freedesktop.org/menu-spec/latest/apa.html

The same way GNOME is there right now:

GNOME	Application based on GNOME libraries	GTK
XFCE    Application based on XFCE libraries     GTK

Jannis Pohlmann (jannis at xfce.org) ACK'd this request.