Added support for GL_LINE_STRIP_ADJACENCY_EXT
Added support for GL_LINE_STRIP_ADJACENCY_EXT

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