0023226: Extend OpenGl_Context to store map of shared GPU resources

OpenGl_Resource was slightly corrected and OpenGl_Element was extended
with Release method to manage GPU resources.

OpenGl_PrimitiveArray now uses new OpenGl_VertexBuffer class (requires OpenGL 1.5+).
Strange workarounds for feedback mode were removed.

OpenGl_Context now provides access to shared GPU resources
and manages resources queue for delayed release
(replaces functionality of removed OpenGl_ResourceCleaner).
Loaded GL_ARB_texture_buffer_object and GL_ARB_draw_instanced extensions.

Global maps of views, workspaces and structures
were moved to OpenGl_GraphicDriver members.
UserDrawCallback() function moved to OpenGl_GraphicDriver methods.

Aspect_GraphicCallbackStruct now holds handle of OpenGl_Context
instead of system-dependent pointers to GL context definition.

New classes NCollection_Vec2, NCollection_Vec3 and NCollection_Vec4
implements interface to low-level data (points, vertices, colors) in GLSL-style.
Removed EnableVBO argument from vdrawparray Draw Harness command
Corrected compilation errors
Fixed wrong argument in Index VBO initialization
Fixed several cases of incorrect memory management in TKV3d

Visual3d_ViewManager::Remove()
Destroy structures before last view removed for correct GPU resources management.

Graphic3d_Structure::GraphicClear()
Remove groups to avoid usage of dead OpenGl_Group pointers.

V3d_View::Remove()
Fixed mistake in #0000280 patch.
Small correction
Fixed OCC280 test command

Replace removed view within created one in ViewerTest EventManager.
ViewerTest, do not create unused 3D view

In current design NIS_View always created and used for both - NIS objects and AIS objects.

src/InterfaceGraphic/InterfaceGraphic_PrimitiveArray.hxx

@@ -50,16 +50,6 @@ typedef enum {
   TelTriangleFansArrayType
 } TelPrimitivesArrayType;
 
-typedef enum 
-{
-  VBOEdges, 
-  VBOVertices, 
-  VBOVcolours, 
-  VBOVnormals, 
-  VBOVtexels,
-  VBOMaxType
-} VBODataType;
-
 typedef struct {
   TelPrimitivesArrayType type;                    /* Array type */
   Tint                   format;                  /* Array datas format */
@@ -75,17 +65,6 @@ typedef struct {
   tel_texture_coord      vtexels;                 /* Texture Coordinates */
   Tchar                 *edge_vis;                /* Edge visibility flag*/
   Tchar                 *keys;                    /* Vertex keys*/
-  Tuint                  bufferVBO[VBOMaxType];   /* VBO IDs for *edges, vertices, vcolours, vnormals, vtexels.
-                                                     default = -1. VBO - Vertex Buffer Object */
-  Tint                   flagBufferVBO;           /* this flag is responded for bufferVBO load status.
-                                                     -1 - Not Initial BufferVBO. Default mean.
-                                                      0 - Error by allocated memory in Graphic Device.
-                                                      Not Initial BufferVBO.
-                                                      1 - Initial BufferVBO */
-  Tint                   VBOEnabled;              /* -1 - it is not known VBO status
-                                                      0 - draw object without VBO
-                                                      1 - draw object with VBO */
-  Standard_Address       contextId;               /* remember context for VBO */
 } CALL_DEF_PARRAY;
 
 #endif /* _InterfaceGraphic_PrimitiveArray_header_file_ */