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/LightSource.cpp

@@ -0,0 +1,17 @@
+#include <osg/LightSource>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER( LightSource,
+                         new osg::LightSource,
+                         osg::LightSource,
+                         "osg::Object osg::Node osg::Group osg::LightSource" )
+{
+    ADD_OBJECT_SERIALIZER( Light, osg::Light, NULL );  // _light
+    
+    BEGIN_ENUM_SERIALIZER( ReferenceFrame, RELATIVE_RF );
+        ADD_ENUM_VALUE( RELATIVE_RF );
+        ADD_ENUM_VALUE( ABSOLUTE_RF );
+    END_ENUM_SERIALIZER();  // _referenceFrame
+}