0022972: Eliminate macro definitions that has compiler-provided analogs (WNT and so on)

1) Macro definition WNT replaced by _WIN32 and _MSC_VER for platform and compiler detection accordingly.
2) Macro definition LIN replaced by __linux__ macro.
3) Macro definition DEB replaced by OCCT_DEBUG macro.

src/DNaming/DNaming_BasicCommands.cxx

@@ -53,7 +53,7 @@
 #include <gp_Trsf.hxx>
 
 #include <TColStd_HArray1OfInteger.hxx>
-//#ifdef WNT
+//#ifdef _MSC_VER
 #include <stdio.h>
 //#endif
 

src/DNaming/DNaming_ModelingCommands.cxx

@@ -71,7 +71,7 @@
 #include <DNaming_SphereDriver.hxx>
 #include <DNaming_PointDriver.hxx>
 #include <DNaming_Line3DDriver.hxx>
-#ifdef WNT
+#ifdef _WIN32
 #define EXCEPTION ...
 #else
 #define EXCEPTION Standard_Failure

src/DNaming/DNaming_TransformationDriver.cxx

@@ -53,7 +53,7 @@
 #include <TopTools_MapIteratorOfMapOfShape.hxx>
 #include <TopTools_MapOfShape.hxx>
 
-#ifdef WNT
+#ifdef _WIN32
 #define EXCEPTION ...
 #else
 #define EXCEPTION Standard_Failure