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/LDOM/LDOM_BasicAttribute.cxx

@@ -15,6 +15,7 @@
 
 #include <LDOM_BasicAttribute.hxx>
 #include <LDOM_MemManager.hxx>
+#include <LDOM_Attr.hxx>
 
 //=======================================================================
 //function : LDOM_BasicAttribute

src/LDOM/LDOM_BasicElement.cxx

@@ -19,6 +19,7 @@
 #include <LDOM_BasicAttribute.hxx>
 #include <LDOM_BasicText.hxx>
 #include <LDOM_MemManager.hxx>
+#include <LDOM_NodeList.hxx>
 
 //=======================================================================
 //function : Create

src/LDOM/LDOM_BasicText.cxx

@@ -15,6 +15,7 @@
 
 #include <LDOM_BasicText.hxx>
 #include <LDOM_MemManager.hxx>
+#include <LDOM_CharacterData.hxx>
 
 //=======================================================================
 //function : LDOM_BasicText()

src/LDOM/LDOM_Element.cxx

@@ -16,6 +16,7 @@
 #include <LDOM_MemManager.hxx>
 #include <LDOM_BasicElement.hxx>
 #include <LDOM_BasicAttribute.hxx>
+#include <LDOM_Element.hxx>
 
 #include <Standard_ProgramError.hxx>
 

src/LDOM/LDOM_MemManager.hxx

@@ -18,10 +18,11 @@
 
 #include <MMgt_TShared.hxx>
 #include <Standard_Type.hxx>
-#include <LDOM_Document.hxx>
 
+class LDOM_Document;
 class LDOM_BasicElement;
 class LDOM_MemManager;
+class LDOMBasicString;
 
 // Define handle class for LDOM_MemManager
 DEFINE_STANDARD_HANDLE (LDOM_MemManager, MMgt_TShared)
@@ -63,8 +64,8 @@ class LDOM_MemManager : public MMgt_TShared
                                          const Standard_Integer theHashValue,
                                          const char             * theHashedStr);
 
-  LDOM_Document           Doc           () const
-                                { return LDOM_Document (* this); }
+//  LDOM_Document           Doc           () const
+//                                { return LDOM_Document (* this); }
 
   const LDOM_MemManager&  Self          () const
                                 { return * this; }

src/LDOM/LDOM_Node.hxx

@@ -22,9 +22,9 @@
 #include <Standard_Macro.hxx>
 #include <Standard_TypeDef.hxx>
 #include <LDOMString.hxx>
+#include <LDOM_MemManager.hxx>
 
 class LDOM_BasicNode;
-class LDOM_MemManager;
 
 //  LDOM_Node : base class for LDOM interface objects
 //              references LDOM_BasicNode - the real data stored in Document