Added beginings of new AutoTransform class.

src/osg/AutoTransform.cpp

@@ -0,0 +1,25 @@
+#include <osg/AutoTransform>
+
+using namespace osg;
+
+AutoTransform::AutoTransform()
+{
+}
+
+AutoTransform::AutoTransform(const AutoTransform& transform,const CopyOp& copyop):
+    Group(transform,copyop),
+    _calcTransformCallback(dynamic_cast<CalcTransformCallback*>(copyop(transform._calcTransformCallback.get())))
+{    
+}
+
+
+AutoTransform::~AutoTransform()
+{
+}
+
+const bool AutoTransform::computeBound() const
+{
+    // can't calc the bound of a automatically transform object,
+    // it position isn't know until cull time.
+    return false;
+}