From Wang Rui, "I'd like to provide a quick updates of the new tessellation shader

serializers and dotosgwrappers. It includes reading/writing supports
for the two new shader types and the GL_PATCHES enum. The
setParameterfv() method is not wrapped at present because it is still
not finished.

Enum serialziers don't require back-compatibility checks if only
add/remove enum items, so I'm not going to use the new
UPDATE_TO_VERSION macro this time."

src/osgDB/ObjectWrapper.cpp

@@ -505,6 +505,7 @@ ObjectWrapperManager::ObjectWrapperManager()
     primitiveTable.add( "GL_LINE_STRIP_ADJACENCY_EXT", GL_LINE_STRIP_ADJACENCY_EXT );
     primitiveTable.add( "GL_TRIANGLES_ADJACENCY_EXT", GL_TRIANGLES_ADJACENCY_EXT );
     primitiveTable.add( "GL_TRIANGLE_STRIP_ADJACENCY_EXT", GL_TRIANGLE_STRIP_ADJACENCY_EXT );
+    primitiveTable.add( "GL_PATCHES", GL_PATCHES );
 }
 
 ObjectWrapperManager::~ObjectWrapperManager()