xfce_icon_theme -> gtk_icon_theme?

[Jasper Huijsmans]

daniele favara schreef:
> if i can express my opinion  ... i would follow tango icon naming spec:
> 
> http://tango-project.org/Standard_Icon_Naming_Specification

Tango uses the spec, it doesn't provide it. The question is not whether 
we should use it (we should), but rather whether the specification has 
the icons we need and if that is enough to provide the functionality we 
want.