enable URDF loading throught the 'File/Open' menu

set a default camera targets for each demo. note that it is only reset when switching to a different demo, so you can restart at your chosen location.
no OpenCL pairbench drawing in OpenGL2 (there is no VBO available etc)

examples/OpenGLWindow/GLInstanceRendererInternalData.h

@@ -15,6 +15,9 @@ struct GLInstanceRendererInternalData
 	int 								m_vboSize;
 	GLuint								m_vbo;
 	int									m_totalNumInstances;
+	int		m_maxNumObjectCapacity;
+	int		m_maxShapeCapacityInBytes;
+
 };
 
 #endif //GL_INSTANCE_RENDERER_INTERNAL_DATA_H