Added an #include<assert.h> to avoid compile problems on some systems.
Added an #include<assert.h> to avoid compile problems on some systems.


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