Rewrote osg:Statistics so that it is PrimitiveFunctor as is now completely

decoupled from osg::Drawable.  The Drawable::getStats() virtual method
no longer exists.

Updated the Viewer to use the osg::Statistics incarnation and reformated stats
to clean it up.

include/osg/GeoSet

@@ -328,12 +328,6 @@ class SG_EXPORT GeoSet : public Drawable
 
         /** get the current AttributeDeleteFunction to handle attribute arrays attached to this Geoset.*/
         const AttributeDeleteFunctor* getAttributeDeleteFunctor() const { return _adf.get(); }
-        
-
-        /** Statistics collection for each drawable- 26.09.01
-         */
-        bool getStats(Statistics &);
-
 
         /** return the attributes supported by applyAttrbuteUpdate() as an AttributeBitMask.*/
         virtual AttributeBitMask suppportsAttributeOperation() const;