From Wang Rui, new native binary/ascii format infrastructure and wrappers.

From Robert Osfield, refactor of Wang Rui's original osg2 into 3 parts - parts placed into osgDB, the ReaderWriter placed into src/osg/Plugin/osg and wrappers into src/osgWrappers/serializers/osg

src/osgWrappers/serializers/osg/MatrixTransform.cpp

@@ -0,0 +1,12 @@
+#include <osg/MatrixTransform>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER( MatrixTransform,
+                         new osg::MatrixTransform,
+                         osg::MatrixTransform,
+                         "osg::Object osg::Node osg::Group osg::Transform osg::MatrixTransform" )
+{
+    ADD_MATRIX_SERIALIZER( Matrix, osg::Matrix() );  // _matrix
+}