Converted the instance of osgNew and osgDelete back to new and delete as part

of depecating the include/osg/MemoryManager

src/osgPlugins/osg/Depth.cpp

@@ -18,7 +18,7 @@ const char* Depth_getFuncStr(Depth::Function func);
 // register the read and write functions with the osgDB::Registry.
 RegisterDotOsgWrapperProxy g_DepthProxy
 (
-    osgNew osg::Depth,
+    new osg::Depth,
     "Depth",
     "Object StateAttribute Depth",
     &Depth_readLocalData,