Removed OSG_USE_BOUND and associated osg::Bound adapter class to avoid problems with BoundingBox::expandBy/expandByRadius() implementation choosing a null BoundingBox from

the osg::Bound class causing crashes.

include/osg/Plane

@@ -22,10 +22,6 @@
 #include <osg/BoundingSphere>
 #include <osg/BoundingBox>
 
-#ifdef OSG_USE_BOUND
-#include <osg/Node>
-#endif
-
 #include <vector>
 
 namespace osg {
@@ -325,13 +321,6 @@ class OSG_EXPORT Plane
 
         }
 
-#ifdef OSG_USE_BOUND
-        inline int intersect(const Bound& bound) const
-        {
-            if (bound.bb) return intersect(*bound.bb);
-            else return intersect(*bound.bs);
-        }
-#endif
         /** Transform the plane by matrix.  Note, this operation carries out
           * the calculation of the inverse of the matrix since a plane
           * must be multiplied by the inverse transposed to transform it. This