0027816: Visualization - provide an API for overriding clipping planes list

Graphic3d_SequenceOfHClipPlane now inherits Standard_Transient.
PrsMgr_PresentableObject, Graphic3d_Structure, Graphic3d_CStructure,
V3d_View, OpenGl_View now manages the plane list by Handle.
The getters ::GetClipPlanes() has been removed,
setters taking non-handle ::SetClipPlanes() has been marked deprecated.

OpenGl_Structure::Render() and SelectMgr_ViewerSelector::checkOverlap()
now disable global (view) clipping planes for objects
with flags Graphic3d_TMF_TriedronPers and Graphic3d_TMF_2d
or with new flag Graphic3d_SequenceOfHClipPlane::ToOverrideGlobal().

OpenGl_Clipping now implements interface for managing clipping planes
without copying the sequences.
The filtering of duplicates is no more performed by OpenGl_Clipping
- application is responsible to not do this.
OpenGl_Clipping tries avoiding unnecessary allocations for managing
list of active planes.

MFC sample has been updated to use V3d_View::ClipPlanes() method.

src/SelectMgr/SelectMgr_SelectingVolumeManager.hxx

@@ -172,7 +172,11 @@ public:
 
   //! Valid for point selection only!
   //! Computes depth range for global (defined for the whole view) clipping planes.
-  Standard_EXPORT void SetViewClipping (const Graphic3d_SequenceOfHClipPlane& thePlanes);
+  Standard_EXPORT void SetViewClipping (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes);
+
+  //! Set if view clipping plane is enabled or not.
+  //! @return previous flag value
+  Standard_EXPORT Standard_Boolean SetViewClippingEnabled (const Standard_Boolean theToEnable);
 
   //! A set of helper functions that return rectangular selecting frustum data
   Standard_EXPORT const gp_Pnt* GetVertices() const;