Removed raw references to _WIN32; now just check to see if it is defined.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@177291 91177308-0d34-0410-b5e6-96231b3b80d8

include/__config

@@ -96,7 +96,7 @@
 # endif
 #endif  // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
 
-#if _WIN32
+#ifdef _WIN32
 
 // only really useful for a DLL
 #ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...

include/__locale

@@ -19,7 +19,7 @@
 #include <cstdint>
 #include <cctype>
 #include <locale.h>
-#if _WIN32
+#ifdef _WIN32
 # include <support/win32/locale_win32.h>
 #elif (__GLIBC__ || __APPLE__ || __FreeBSD__ || __sun__)
 # include <xlocale.h>
@@ -327,7 +327,7 @@ public:
     static const mask punct  = _ISpunct;
     static const mask xdigit = _ISxdigit;
     static const mask blank  = _ISblank;
-#elif _WIN32
+#elif defined(_WIN32)
     typedef unsigned short mask;
     static const mask space  = _SPACE;
     static const mask print  = _BLANK|_PUNCT|_ALPHA|_DIGIT;

include/cwchar

@@ -106,7 +106,7 @@ size_t wcsrtombs(char* restrict dst, const wchar_t** restrict src, size_t len,
 #include <__config>
 #include <cwctype>
 #include <wchar.h>
-#if _WIN32
+#ifdef _WIN32
 #include <support/win32/support.h> // pull in *swprintf defines
 #endif // _WIN32
 

include/locale

@@ -186,7 +186,7 @@ template <class charT> class messages_byname;
 #endif
 #include <cstdlib>
 #include <ctime>
-#if _WIN32
+#ifdef _WIN32
 #include <support/win32/locale_win32.h>
 #else // _WIN32
 #include <nl_types.h>
@@ -3799,7 +3799,7 @@ template <class _CharT>
 typename messages<_CharT>::catalog
 messages<_CharT>::do_open(const basic_string<char>& __nm, const locale&) const
 {
-#if _WIN32
+#ifdef _WIN32
     return -1;
 #else // _WIN32
     catalog __cat = (catalog)catopen(__nm.c_str(), NL_CAT_LOCALE);
@@ -3814,7 +3814,7 @@ typename messages<_CharT>::string_type
 messages<_CharT>::do_get(catalog __c, int __set, int __msgid,
                          const string_type& __dflt) const
 {
-#if _WIN32
+#ifdef _WIN32
     return __dflt;
 #else // _WIN32
     string __ndflt;
@@ -3836,7 +3836,7 @@ template <class _CharT>
 void
 messages<_CharT>::do_close(catalog __c) const
 {
-#if !_WIN32
+#if !defined(_WIN32)
     if (__c != -1)
         __c <<= 1;
     nl_catd __cat = (nl_catd)__c;