Addressing feedback from Rene Rivera for adding BOOST macros for detecting the Windows Runtime being targeted.

Now there are new predefs for desktop, store, phone, and the Windows Runtime (store/phone) in general.
These can easily be used throughout Boost to detect the Windows platform being targeted.

include/boost/predef/platform.h

@@ -1,5 +1,6 @@
 /*
 Copyright Rene Rivera 2013
+Copyright (c) Microsoft Corporation 2014
 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)
@@ -9,6 +10,10 @@ http://www.boost.org/LICENSE_1_0.txt)
 #define BOOST_PREDEF_PLATFORM_H
 
 #include <boost/predef/platform/mingw.h>
+#include <boost/predef/platform/windows_desktop.h>
+#include <boost/predef/platform/windows_store.h>
+#include <boost/predef/platform/windows_phone.h>
+#include <boost/predef/platform/windows_runtime.h>
 /*#include <boost/predef/platform/.h>*/
 
 #endif

include/boost/predef/platform/windows_desktop.h

@@ -0,0 +1,42 @@
+/*
+Copyright (c) Microsoft Corporation 2014
+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_WINDOWS_DESKTOP_H
+#define BOOST_PREDEF_PLAT_WINDOWS_DESKTOP_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_PLAT_WINDOWS_DESKTOP`]
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`!WINAPI_FAMILY`] [__predef_detection__]]
+    [[`WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP`] [__predef_detection__]]
+    ]
+ */
+
+#define BOOST_PLAT_WINDOWS_DESKTOP BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if !defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)
+#   undef BOOST_PLAT_WINDOWS_DESKTOP
+#   define BOOST_PLAT_WINDOWS_DESKTOP BOOST_VERSION_NUMBER_AVAILABLE
+#endif
+ 
+#ifdef BOOST_PLAT_WINDOWS_DESKTOP
+#   define BOOST_PLAT_WINDOWS_DESKTOP_AVALIABLE
+#   include <boost/predef/detail/platform_detected.h>
+#endif
+
+#define BOOST_PLAT_WINDOWS_DESKTOP_NAME "Windows Desktop"
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_PLAT_WINDOWS_DESKTOP,BOOST_PLAT_WINDOWS_DESKTOP_NAME)
+
+#endif

include/boost/predef/platform/windows_phone.h

@@ -0,0 +1,41 @@
+/*
+Copyright (c) Microsoft Corporation 2014
+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_WINDOWS_PHONE_H
+#define BOOST_PREDEF_PLAT_WINDOWS_PHONE_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_PLAT_WINDOWS_PHONE`]
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP`] [__predef_detection__]]
+    ]
+ */
+
+#define BOOST_PLAT_WINDOWS_PHONE BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
+#   undef BOOST_PLAT_WINDOWS_PHONE
+#   define BOOST_PLAT_WINDOWS_PHONE BOOST_VERSION_NUMBER_AVAILABLE
+#endif
+ 
+#ifdef BOOST_PLAT_WINDOWS_PHONE
+#   define BOOST_PLAT_WINDOWS_PHONE_AVALIABLE
+#   include <boost/predef/detail/platform_detected.h>
+#endif
+
+#define BOOST_PLAT_WINDOWS_PHONE_NAME "Windows Phone"
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_PLAT_WINDOWS_PHONE,BOOST_PLAT_WINDOWS_PHONE_NAME)
+
+#endif

include/boost/predef/platform/windows_runtime.h

@@ -0,0 +1,42 @@
+/*
+Copyright (c) Microsoft Corporation 2014
+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_WINDOWS_RUNTIME_H
+#define BOOST_PREDEF_PLAT_WINDOWS_RUNTIME_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_PLAT_WINDOWS_RUNTIME`]
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`WINAPI_FAMILY == WINAPI_FAMILY_APP`] [__predef_detection__]]
+    [[`WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP`] [__predef_detection__]]
+    ]
+ */
+
+#define BOOST_PLAT_WINDOWS_RUNTIME BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if WINAPI_FAMILY == WINAPI_FAMILY_APP || WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
+#   undef BOOST_PLAT_WINDOWS_RUNTIME
+#   define BOOST_PLAT_WINDOWS_RUNTIME BOOST_VERSION_NUMBER_AVAILABLE
+#endif
+ 
+#ifdef BOOST_PLAT_WINDOWS_RUNTIME
+#   define BOOST_PLAT_WINDOWS_RUNTIME_AVALIABLE
+#   include <boost/predef/detail/platform_detected.h>
+#endif
+
+#define BOOST_PLAT_WINDOWS_RUNTIME_NAME "Windows Runtime"
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_PLAT_WINDOWS_RUNTIME,BOOST_PLAT_WINDOWS_RUNTIME_NAME)
+
+#endif

include/boost/predef/platform/windows_store.h

@@ -0,0 +1,41 @@
+/*
+Copyright (c) Microsoft Corporation 2014
+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_WINDOWS_STORE_H
+#define BOOST_PREDEF_PLAT_WINDOWS_STORE_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_PLAT_WINDOWS_STORE`]
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`WINAPI_FAMILY == WINAPI_FAMILY_APP`] [__predef_detection__]]
+    ]
+ */
+
+#define BOOST_PLAT_WINDOWS_STORE BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if WINAPI_FAMILY == WINAPI_FAMILY_APP
+#   undef BOOST_PLAT_WINDOWS_STORE
+#   define BOOST_PLAT_WINDOWS_STORE BOOST_VERSION_NUMBER_AVAILABLE
+#endif
+ 
+#ifdef BOOST_PLAT_WINDOWS_STORE
+#   define BOOST_PLAT_WINDOWS_STORE_AVALIABLE
+#   include <boost/predef/detail/platform_detected.h>
+#endif
+
+#define BOOST_PLAT_WINDOWS_STORE_NAME "Windows Store"
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_PLAT_WINDOWS_STORE,BOOST_PLAT_WINDOWS_STORE_NAME)
+
+#endif