[Qt-creator] Recent fix for kde42

[Aleksey Palazhchenko]

Hi trolls,

Recent fix in QtCreator (e08f1763) for KDE 4.2.0 actually broke things again. :(

$ bin/qtcreator
makekdewidgets(15587) Phonon::KdePlatformPlugin::createBackend: using
backend:  "Xine"
bin/qtcreator: symbol lookup error:
/usr/lib/kde4/plugins/phonon_backend/phonon_xine.so: undefined symbol:
_ZNK6Phonon22AudioOutputInterface4219deviceAccessListForERKNS_17ObjectDescriptionILNS_21ObjectDescriptionTypeE0EEE

It's not really good idea to init ALL plugins. This bug can be worked
around by kde42 users (like me) by changing widget style to QtCurve.
And this was already fixed in KDE trunk
(http://bugs.kde.org/show_bug.cgi?id=182861). Therefor I think it's
better to revert commit e08f1763.

Thanks,
Aleksey.

p.s. Anyway, QtCreator rocks! :)