set Qt organization, application, and version in main program * main-gui.cc (main): Pass "octave" and "octave-gui" for organization and application names and OCTAVE_VERSION as version to qt_application constructor. * qt-application.cc (qt_application::qt_application): Set organization and application names and application version in QCoreApplication object. Set default QSettings format. * octave-qobject.cc (base_qobject::base_qobject): Don't set QtCoreApplication name and version here. * resource-manager.cc (resource_manager::resource_manager): Use default construtor for gui_settings.

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