Added NodeVisitor::g/setValueMap and g/setValueStack, and osg::PushPopObject and osg::PushPopValue helper classes for pushing/popping values to the NodeVisitor's ValueStack.
Added NodeVisitor::g/setValueMap and g/setValueStack, and osg::PushPopObject and osg::PushPopValue helper classes for pushing/popping values to the NodeVisitor's ValueStack.

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