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/Multisample.cpp

@@ -0,0 +1,19 @@
+#include <osg/Multisample>
+#include <osgDB/ObjectWrapper>
+#include <osgDB/InputStream>
+#include <osgDB/OutputStream>
+
+REGISTER_OBJECT_WRAPPER( Multisample,
+                         new osg::Multisample,
+                         osg::Multisample,
+                         "osg::Object osg::StateAttribute osg::Multisample" )
+{
+    ADD_FLOAT_SERIALIZER( Coverage, 0.0f );  // _coverage
+    ADD_BOOL_SERIALIZER( Invert, false );  // _invert
+    
+    BEGIN_ENUM_SERIALIZER2( Hint, osg::Multisample::Mode, DONT_CARE );
+        ADD_ENUM_VALUE( FASTEST );
+        ADD_ENUM_VALUE( NICEST );
+        ADD_ENUM_VALUE( DONT_CARE );
+    END_ENUM_SERIALIZER();  // _mode
+}