Added minimum of 1 to make sure numProcessors is always valid
Added minimum of 1 to make sure numProcessors is always valid

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