Disabled -Wextra for dae build as warnings in COLLADA_DOM headers can't be fixed
Disabled -Wextra for dae build as warnings in COLLADA_DOM headers can't be fixed

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