Replaced ref_ptr<>:take with ref_ptr<>:release, and added handling of removeal

of ref_ptr<> operator >.

examples/osgdepthshadow/osgdepthshadow.cpp

@@ -7,7 +7,6 @@
 #include <osg/Geode>
 #include <osg/ShapeDrawable>
 #include <osg/PolygonOffset>
-#include <osg/CullFace>
 #include <osg/Texture2D>
 #include <osg/MatrixTransform>
 #include <osg/Light>

examples/osgfxbrowser/Frame.cpp

@@ -95,7 +95,7 @@ osg::Geometry *Frame::build_quad(const Rect &rect, const osg::Vec4 &color, bool
 
     geo->addPrimitiveSet(new osg::DrawArrays(GL_QUADS, 0, shadow? 12: 4));
 
-    return geo.take();
+    return geo.release();
 }
 
 }

examples/osgfxbrowser/osgfxbrowser.cpp

@@ -243,7 +243,7 @@ osg::Group* build_hud_base(osg::Group* root)
     osg::ref_ptr<osg::BlendFunc> bf = new osg::BlendFunc;
     ss->setAttributeAndModes(bf.get());
 
-    return xform.take();
+    return xform.release();
 }
 
 EffectPanel* build_gui(osg::Group* root)
@@ -256,7 +256,7 @@ EffectPanel* build_gui(osg::Group* root)
 
     hud->addChild(effect_panel.get());
 
-    return effect_panel.take();
+    return effect_panel.release();
 }
 
 void build_world(osg::Group* root, osg::Node* scene, osgProducer::Viewer& viewer)