Updated the AUTHORS file to mention the original authors of the terrapage loader.
Updated the AUTHORS file to mention the original authors of the terrapage
loader.


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