Disable -Wshadow on GNU compile as OGR headers have shadowing parameters we can't fix.
Disable -Wshadow on GNU compile as OGR headers have shadowing parameters we can't fix.

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