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Halla Rempt authored
This is already a tiny part of preparation for Qt5, where QtGui is split into QtGui and QtWidgets. If we use explicit module names in our includes, we are liable to churn like this. Since KDE applications always have all Qt modules in the include path anyway, direct includes always work (both in Qt4 and Qt5), and since we already used direct includes in thousands of places, this change makes our code more consistent, too.
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