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/Standard/Standard_ErrorHandler.cxx

@@ -22,7 +22,7 @@
 #include <Standard_Mutex.hxx>
 #include <Standard.hxx>
 
-#ifndef WNT
+#ifndef _WIN32
 #include <pthread.h>
 #else
 #include <windows.h>
@@ -47,7 +47,7 @@ static Standard_Mutex theMutex;
 
 static inline Standard_ThreadId GetThreadID()
 {
-#ifndef WNT
+#ifndef _WIN32
   return pthread_self();
 #else
   return GetCurrentThreadId();

src/Standard/Standard_MMgrOpt.cxx

@@ -77,10 +77,10 @@ extern "C" int getpagesize() ;
 #elif defined(__APPLE__)
 #define MMAP_BASE_ADDRESS  0x80000000
 #define MMAP_FLAGS (MAP_ANON | MAP_PRIVATE)
-#elif defined(LIN)
+#elif defined(__linux__)
 #define MMAP_BASE_ADDRESS 0x20000000
 #define MMAP_FLAGS (MAP_PRIVATE)
-#elif defined(WNT)
+#elif defined(_WIN32)
 //static HANDLE myhMap;
 #else
 #define MMAP_BASE_ADDRESS 0x60000000
@@ -197,7 +197,7 @@ void Standard_MMgrOpt::Initialize()
     myNbPages = 1000;
   
   // get system-dependent page size
-#ifndef WNT
+#ifndef _WIN32
   myPageSize = getpagesize();
   if ( ! myPageSize )
     myMMap = 0;
@@ -247,7 +247,7 @@ void Standard_MMgrOpt::Initialize()
       perror("ERR_MEMRY_FAIL");
 #endif
     
-#if defined(IRIX) || defined(__sgi) || defined(SOLARIS) || defined(__sun) || defined(LIN) || defined(linux) || defined(__FreeBSD__) || defined(__ANDROID__)
+#if defined(IRIX) || defined(__sgi) || defined(SOLARIS) || defined(__sun) || defined(__linux__) || defined(linux) || defined(__FreeBSD__) || defined(__ANDROID__)
     if ((myMMap = open ("/dev/zero", O_RDWR)) < 0) {
       if ((myMMap = open ("/dev/null", O_RDWR)) < 0){
         myMMap = 0;
@@ -505,7 +505,7 @@ Standard_Integer Standard_MMgrOpt::Purge(Standard_Boolean )
   // release memory pools containing no busy memory;
   // for that for each pool count the summary size of blocks
   // got from the free lists allocated from this pool
-#ifndef WNT
+#ifndef _WIN32
   const Standard_Size PoolSize = myPageSize * myNbPages;
 #else
   const Standard_Size PoolSize =
@@ -708,7 +708,7 @@ retry:
 
   // if MMap option is ON, allocate using memory mapped files
   if (myMMap) {
-#ifndef WNT
+#ifndef _WIN32
 
     // align size to page size
     const Standard_Size AlignedSize = PAGE_ALIGN(Size, myPageSize);
@@ -730,7 +730,7 @@ retry:
     // save actually allocated size into argument
     Size = AlignedSize;
 
-#else /* WNT */
+#else /* _WIN32 */
 
     // align size to page size, taking into account additional space needed to
     // store handle to the memory map
@@ -797,14 +797,14 @@ retry:
 
 void Standard_MMgrOpt::FreeMemory (Standard_Address aBlock, 
                                    const Standard_Size
-#ifndef WNT                                   
+#ifndef _WIN32                                   
                                    aSize
 #endif
                                   )
 {
   // release memory (either free or unmap)
   if ( myMMap ) {
-#ifndef WNT
+#ifndef _WIN32
     // align size to page size, just the same as in AllocMemory()
     const Standard_Size AlignedSize = PAGE_ALIGN(aSize, myPageSize);
     munmap((char*)aBlock, AlignedSize);

src/Standard/Standard_MMgrTBBalloc.cxx

@@ -16,11 +16,6 @@
 #include <Standard_MMgrTBBalloc.hxx>
 #include <Standard_OutOfMemory.hxx>
 
-// NOTE: replaced by more correct check
-//#if defined(WNT) || defined(LIN)
-//#define HAVE_TBB 1
-//#endif
-
 // paralleling with Intel TBB
 #ifdef HAVE_TBB
 #include <tbb/scalable_allocator.h>

src/Standard/Standard_Macro.hxx

@@ -33,11 +33,6 @@
 // Windows-specific definitions
 //======================================================
 
-// check if WNT macro is not defined but compiler is MSVC
-#if defined(_MSC_VER) && !defined(WNT)
-#error "Wrong compiler options has been detected. Add /DWNT option for proper compilation!!!!!"
-#endif
-
 # if defined(_WIN32) && !defined(HAVE_NO_DLL)
 
 #  ifndef Standard_EXPORT
@@ -94,7 +89,7 @@
 #define NOIME NOIME
 #endif
 
-# else  /* WNT */
+# else  /* UNIX */
 
 //======================================================
 // UNIX definitions
@@ -123,14 +118,13 @@
 #define	_MEMORY_H
 #endif
 
-# endif  /* WNT */
+# endif  /* _WIN32 */
 
 //======================================================
 // Other
 //======================================================
 
 # ifndef __Standard_API
-//#  ifdef WNT
 #   if !defined(_WIN32) || defined(__Standard_DLL) || defined(__FSD_DLL) || defined(__MMgt_DLL) || defined(__OSD_DLL) || defined(__Plugin_DLL) || defined(__Quantity_DLL) || defined(__Resource_DLL) || defined(__SortTools_DLL) || defined(__StdFail_DLL) || defined(__Storage_DLL) || defined(__TColStd_DLL) || defined(__TCollection_DLL) || defined(__TShort_DLL) || defined(__Units_DLL) || defined(__UnitsAPI_DLL) || defined(__Dico_DLL)
 #    define __Standard_API Standard_EXPORT
 #    define __Standard_APIEXTERN Standard_EXPORTEXTERN
@@ -138,9 +132,6 @@
 #    define __Standard_API Standard_IMPORT
 #    define __Standard_APIEXTERN Standard_IMPORT
 #   endif  // __Standard_DLL
-//#  else
-//#   define __Standard_API
-//#  endif  // WNT
 # endif  // __Standard_API
 
 #endif  

src/Standard/Standard_ThreadId.hxx

@@ -18,7 +18,7 @@
 
 // Platform-dependent definition of the thread identifier type
 
-#ifdef WNT
+#ifdef _WIN32
 
 #include <windows.h>
 typedef DWORD Standard_ThreadId;

src/Standard/Standard_UUID.hxx

@@ -17,7 +17,7 @@
 
 #include <Standard_Type.hxx>
 
-#ifdef WNT
+#ifdef _WIN32
 #include <windows.h>
 #else
 typedef struct {

src/Standard/Standard_values.h

@@ -17,10 +17,6 @@
 #ifndef _Standard_values_HeaderFile
 # define _Standard_values_HeaderFile
 
-#if defined(_MSC_VER) && !defined(WNT)
-#error "Wrong compiler options has been detected. Add /DWNT option for proper compilation!!!!!"
-#endif
-
 #ifdef _WIN32
 # include <limits>
 #else