Cross-desktop helpers

[Maks Orlovich]

> This should to be done soon - before things like KConfigXT happen, which
> basically looks like duplicating gconf in a different language, "just to

Incorrect. KConfigXT is essentially a system for declaratively describing code 
that uses KConfig and having it automatically generated, including bindings 
to dialogs.

The only similarity is that .kcfg files, like GConf scheme files, may be used 
for a configuration editor.