QSettings in style kcm

[Maksim Orlovich]

> Hi,
> i've noticed that the style kcm use QSettings instead of kconfig to
> save some effect preferences
> http://lxr.kde.org/source/KDE/kdebase/workspace/kcontrol/style/kcmstyle.cpp#619
> I don't think it's right since if i use systemsettings the filename is
> ~/.config/kde.org/systemsettings.conf while if i use kcmshell4 the
> filename is ~/.config/kde.org/kcmshell.conf

Nothing reads these anyway, they're just a relic from KDE3. The KCM needs
a bit of a cleanup to remove this sort of stuff. Volunteers encouraged :-)