From Martin Naylor, build fix for windows.
From Martin Naylor, build fix for windows.


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