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/GeomliteTest/GeomliteTest_API2dCommands.cxx

@@ -44,7 +44,7 @@
 #include <IntRes2d_IntersectionPoint.hxx>
 
 #include <stdio.h>
-#ifdef WNT
+#ifdef _WIN32
 Standard_IMPORT Draw_Viewer dout;
 #endif
 

src/GeomliteTest/GeomliteTest_ApproxCommands.cxx

@@ -60,8 +60,11 @@
 #include <AppDef_Array1OfMultiPointConstraint.hxx>
 #include <math_Vector.hxx>
 
-#ifdef WNT
+#ifdef _MSC_VER
 #include <stdio.h>
+#endif
+
+#ifdef _WIN32
 Standard_IMPORT Draw_Viewer dout;
 #endif
 

src/GeomliteTest/GeomliteTest_CurveCommands.cxx

@@ -108,7 +108,7 @@
 #include <Approx_CurvilinearParameter.hxx>
 #include <Approx_CurveOnSurface.hxx>
 #include <Geom_BSplineSurface.hxx>
-#ifdef WNT
+#ifdef _WIN32
 Standard_IMPORT Draw_Viewer dout;
 #endif
 

src/GeomliteTest/GeomliteTest_ModificationCommands.cxx

@@ -33,7 +33,7 @@
 #include <Geom_BoundedCurve.hxx>
 #include <Geom_BoundedSurface.hxx>
 
-#ifdef WNT
+#ifdef _MSC_VER
 #include <stdio.h>
 //#define strcasecmp strcmp Already defined
 #endif

src/GeomliteTest/GeomliteTest_SurfaceCommands.cxx

@@ -82,10 +82,8 @@
 #include <DBRep.hxx>
 #include <Geom_Curve.hxx>
 
-//#ifdef WNT
 #include <stdio.h>
 #ifdef _WIN32
-//#define strcasecmp strcmp Already defined
 Standard_IMPORT Draw_Viewer dout;
 #endif