[patch] KPluginInfo's use of KConfig

[Matthias Kretz]

Hi,

while looking into KSettings::Dialog and friends in libkutils I stumbled over 
KPluginInfo's use of KConfig in it's API. Now that KConfigGroup has grown up 
I'd like to use KConfigGroup exclusively in the KPluginInfo API.

Also, since KConfigGroup is a value based class now (it was explicitly shared 
already) I'd like to add a default ctor + isValid() function so that those 
can be used like a null pointer or that it can be used with QList and such at 
all. While at it I replaced the d-pointer with a QExplicitlySharedDataPointer 
so that copying and deleting the object is safe from any thread.

Ok to commit next monday? Yes, I'll add a bit more dox...

-- 
________________________________________________________
Matthias Kretz (Germany)                            <><
http://Vir.homelinux.org/
MatthiasKretz at gmx.net, kretz at kde.org,
Matthias.Kretz at urz.uni-heidelberg.de
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