Removed default assignement of GeometryTechnique as the TerrainTechniquePrototype.
Removed default assignement of GeometryTechnique as the TerrainTechniquePrototype.


koshman86/osg,koshman86/osg,XiaoCC/osg,stmh/osg,XiaoCC/osg,ntoand/osg,omega-hub/osg,ntoand/osg,stmh/osg,artoolkit/osg,omega-hub/osg,stmh/osg,XiaoCC/osg,XiaoCC/osg,koshman86/osg,stmh/osg,omega-hub/osg,ghub/osg,ntoand/osg,stmh/osg,ghub/osg,koshman86/osg,XiaoCC/osg,artoolkit/osg,artoolkit/osg,ghub/osg,ntoand/osg,artoolkit/osg,ghub/osg,omega-hub/osg