From Ralf Habacker, removed redundent SwitchLayer::clear()
From Ralf Habacker, removed redundent SwitchLayer::clear()


scrawl/osg,openscenegraph/osg,artoolkit/osg,jtorresfabra/osg,openscenegraph/osg,marchelbling/osg,scrawl/osg,openscenegraph/osg,marchelbling/osg,jtorresfabra/osg,jtorresfabra/osg,marchelbling/osg,artoolkit/osg,artoolkit/osg,tomasthoresen/osg,tomasthoresen/osg,scrawl/osg,marchelbling/osg,scrawl/osg,tomasthoresen/osg,artoolkit/osg,openscenegraph/osg,jtorresfabra/osg,tomasthoresen/osg