0024023: Revamp the OCCT Handle -- general

Missing headers added; includes of headers "Handle_...hxx" removed.

Misuses of macro Handle() and its use in typedefs corrected.

Alias classes Profile and Option are removed from IFSelect; ones defined in MoniTool are used directly.

Removed header files defining only Handle classes (except Image_PixMap_Handle.hxx)

Classes SelectMgr_BaseFrustum and now inherit Standard_Transient and can be manipulated by Handle (not NCollection_Handle)

Fixed reference-type local variable pointing to temporary object

Use of handle in conditional expressions and comparisons to NULL are replaced by call to method IsNull()

src/ViewerTest/ViewerTest_OpenGlCommands.cxx

@@ -52,11 +52,12 @@ extern Standard_Boolean VDisplayAISObject (const TCollection_AsciiString& theNam
                                            Standard_Boolean theReplaceIfExists = Standard_True);
 extern ViewerTest_DoubleMapOfInteractiveAndName& GetMapOfAIS();
 
+namespace {
+
 //=======================================================================
 //function : VUserDraw
 //purpose  : Checks availability and operation of UserDraw feature
 //=======================================================================
-DEFINE_STANDARD_HANDLE(VUserDrawObj, AIS_InteractiveObject)
 
 class VUserDrawObj : public AIS_InteractiveObject
 {
@@ -126,7 +127,6 @@ private:
     friend class Element;
 };
 
-
 void VUserDrawObj::Compute(const Handle(PrsMgr_PresentationManager3d)& /*thePresentationManager*/,
                            const Handle(Prs3d_Presentation)& thePresentation,
                            const Standard_Integer /*theMode*/)
@@ -196,6 +196,8 @@ void VUserDrawObj::Render(const Handle(OpenGl_Workspace)& theWorkspace) const
   glPopAttrib();
 }
 
+} // end of anonymous namespace
+
 OpenGl_Element* VUserDrawCallback(const CALL_DEF_USERDRAW * theUserDraw)
 {
   Handle(VUserDrawObj) anIObj = (VUserDrawObj*)theUserDraw->Data;