Squashed 'third_party/boostorg/predef/' content from commit 560ff52

Change-Id: Ib7804ff2c768e0d597993b019146292dfb41e9dc
git-subtree-dir: third_party/boostorg/predef
git-subtree-split: 560ff5298ead78276872604f1ee6523e63a4fa90
diff --git a/include/boost/predef/platform/mingw64.h b/include/boost/predef/platform/mingw64.h
new file mode 100644
index 0000000..a35dd3e
--- /dev/null
+++ b/include/boost/predef/platform/mingw64.h
@@ -0,0 +1,63 @@
+/*
+Copyright Rene Rivera 2008-2015
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_PLAT_MINGW64_H
+#define BOOST_PREDEF_PLAT_MINGW64_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_PLAT_MINGW64`]
+
+[@https://mingw-w64.org/ MinGW-w64] platform.
+Version number available as major, minor, and patch.
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`__MINGW64__`] [__predef_detection__]]
+
+    [[`__MINGW64_VERSION_MAJOR`, `__MINGW64_VERSION_MINOR`] [V.R.0]]
+    ]
+ */
+
+#define BOOST_PLAT_MINGW64 BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if defined(__MINGW64__)
+#   include <_mingw.h>
+#   if !defined(BOOST_PLAT_MINGW64_DETECTION) && (defined(__MINGW64_VERSION_MAJOR) && defined(__MINGW64_VERSION_MINOR))
+#       define BOOST_PLAT_MINGW64_DETECTION \
+            BOOST_VERSION_NUMBER(__MINGW64_VERSION_MAJOR,__MINGW64_VERSION_MINOR,0)
+#   endif
+#   if !defined(BOOST_PLAT_MINGW64_DETECTION)
+#       define BOOST_PLAT_MINGW64_DETECTION BOOST_VERSION_NUMBER_AVAILABLE
+#   endif
+#endif
+
+#ifdef BOOST_PLAT_MINGW64_DETECTION
+#   define BOOST_PLAT_MINGW64_AVAILABLE
+#   if defined(BOOST_PREDEF_DETAIL_PLAT_DETECTED)
+#       define BOOST_PLAT_MINGW64_EMULATED BOOST_PLAT_MINGW64_DETECTION
+#   else
+#       undef BOOST_PLAT_MINGW64
+#       define BOOST_PLAT_MINGW64 BOOST_PLAT_MINGW64_DETECTION
+#   endif
+#   include <boost/predef/detail/platform_detected.h>
+#endif
+
+#define BOOST_PLAT_MINGW64_NAME "MinGW-w64"
+
+#endif
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_PLAT_MINGW64,BOOST_PLAT_MINGW64_NAME)
+
+#ifdef BOOST_PLAT_MINGW64_EMULATED
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_PLAT_MINGW64_EMULATED,BOOST_PLAT_MINGW64_NAME)
+#endif