Added glXDestryContext to help clean up OpenGL.
Added glXDestryContext to help clean up OpenGL.


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