[Fixed] FocusWriter leaves Qt keys in registry

Working on a Qt app, I checked Focuswriter as its Qt too. Regshotting it I discovered that lit leaves the following keys behind:

HKCU\Software\Trolltech
HKCU\Software\Trolltech\OrganizationDefaults
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:\D:
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:\D:\PortableApps
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:\D:\PortableApps\FocusWriterPortable
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:\D:\PortableApps\FocusWriterPortable\App
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:\D:\PortableApps\FocusWriterPortable\App\FocusWriter
HKCU\Software\Trolltech\OrganizationDefaults\Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:\D:\PortableApps\FocusWriterPortable\App\FocusWriter\imageformats
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false\D:
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false\D:\PortableApps
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false\D:\PortableApps\FocusWriterPortable
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false\D:\PortableApps\FocusWriterPortable\App
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false\D:\PortableApps\FocusWriterPortable\App\FocusWriter
HKCU\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.8.false\D:\PortableApps\FocusWriterPortable\App\FocusWriter\imageformats

The FocusWriterPortable.ini reads:

[QtKeysCleanup]
1="Qt Factory Cache 4.7\com.trolltech.Qt.QImageIOHandlerFactoryInterface:"
2="Qt Plugin Cache 4.7.false"

but it should probably be updated to version 4.8:

[QtKeysCleanup]
1="Qt Factory Cache 4.8\com.trolltech.Qt.QImageIOHandlerFactoryInterface:"
2="Qt Plugin Cache 4.8.false"