Fixed 3 Coverity Low Impact performance issues relating to "Big parameter passed by value".
Fixed 3 Coverity Low Impact performance issues relating to "Big parameter passed by value".


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