0024870: Provide OCCT RTTI test cases

Test commands for checking performance and functionality of OCCT handles and RTTI added.
New test case added for that: test perf fclasses handle.

Implementation of opencascade::handle improved to enable compile-time error if two handles of incompatible types are compared.
Comparison of handle to NULL is not possible any more; method IsNull() should be used instead.

Method LDOM_MemManager::Doc() is removed to avoid cyclic dependency of headers; constructor of LDOM_Document(LDOM_MemManager&) is used directly instead.

Inclusion of headers corrected for compilation after previous patch.

src/ShapeFix/ShapeFix.hxx

@@ -23,6 +23,10 @@
 
 #include <Standard_Boolean.hxx>
 #include <Standard_Real.hxx>
+
+#include <Message_ProgressIndicator.hxx>
+#include <ShapeExtend_BasicMsgRegistrator.hxx>
+
 class TopoDS_Shape;
 class Message_ProgressIndicator;
 class ShapeExtend_BasicMsgRegistrator;

src/ShapeFix/ShapeFix_Root.hxx

@@ -26,6 +26,9 @@
 #include <Message_Gravity.hxx>
 #include <Standard_Boolean.hxx>
 #include <Standard_Integer.hxx>
+
+#include <ShapeExtend_BasicMsgRegistrator.hxx>
+
 class ShapeBuild_ReShape;
 class ShapeExtend_BasicMsgRegistrator;
 class TopoDS_Shape;

src/ShapeFix/ShapeFix_Shape.hxx

@@ -27,6 +27,9 @@
 #include <Standard_Boolean.hxx>
 #include <ShapeExtend_Status.hxx>
 #include <Standard_Real.hxx>
+
+#include <Message_ProgressIndicator.hxx>
+
 class ShapeFix_Solid;
 class TopoDS_Shape;
 class Message_ProgressIndicator;