Added thread unit test to test the create, start and destruction of threads
Added thread unit test to test the create, start and destruction of threads


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