make KLibrary's kde3Factory behave like kde4Factory

[Matthias Kretz]

Hi,

attached you'll find a patch that makes kde3Factory (helper function of 
KLibrary) behave the same as kde4Factory does, i.e.:
- create new KPluginFactory instance if called the first time
- return a pointer to the old KPluginFactory object if called a second time
- when the KPluginFactory object is deleted, create it anew
This restores the old behaviour we had with KLibLoader/KLibrary.

Please review and let me know whether I should commit.

-- 
________________________________________________________
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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