0024023: Revamp the OCCT Handle - gcc and clang

Adaptations for compiling with GCC 4.7 and 4.8:
- Construction semantics is used for Handle objects being initialized by const Handle objects of derived type, to avoid overload resolution error in GCC 4.7.
- Missing includes added.
- Fixed bugs related to misuse of direct casts of handle.
- Eliminate CLang warnings on uninitialized and unused variables, functions, and expressions

src/Adaptor3d/Adaptor3d_TopolTool.hxx

@@ -17,18 +17,12 @@
 #ifndef _Adaptor3d_TopolTool_HeaderFile
 #define _Adaptor3d_TopolTool_HeaderFile
 
-#include <Standard.hxx>
-#include <Standard_Type.hxx>
-
-#include <Standard_Integer.hxx>
-#include <Standard_Real.hxx>
 #include <TColStd_HArray1OfReal.hxx>
-#include <MMgt_TShared.hxx>
-#include <Standard_Boolean.hxx>
 #include <TopAbs_State.hxx>
 #include <TopAbs_Orientation.hxx>
 #include <TColStd_Array1OfReal.hxx>
-#include <Standard_Address.hxx>
+#include <Adaptor3d_HVertex.hxx>
+
 class Adaptor2d_HLine2d;
 class Adaptor3d_HVertex;
 class Adaptor3d_HSurface;