WinRT: more "Windows RT" to "WinRT" renaming

include/SDL_main.h

@@ -40,7 +40,7 @@
 #define SDL_MAIN_AVAILABLE
 
 #elif defined(__WINRT__)
-/* On Windows RT, SDL provides a main function that initializes CoreApplication,
+/* On WinRT, SDL provides a main function that initializes CoreApplication,
    creating an instance of IFrameworkView in the process.
 
    Please note that #include'ing SDL_main.h is not enough to get a main()

include/SDL_stdinc.h

@@ -73,7 +73,7 @@
 #ifdef HAVE_MATH_H
 # if defined(__WINRT__)
 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
-   Windows RT.  See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
+   WinRT.  See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
    for more information.
 */
 #  define _USE_MATH_DEFINES

include/SDL_system.h

@@ -94,11 +94,11 @@ extern DECLSPEC const char * SDLCALL SDL_AndroidGetExternalStoragePath();
 #endif /* __ANDROID__ */
 
 
-/* Platform specific functions for Windows RT */
+/* Platform specific functions for WinRT */
 #if defined(__WINRT__) && __WINRT__
 
 /**
- *  \brief Windows RT / Windows Phone path types
+ *  \brief WinRT / Windows Phone path types
  */
 typedef enum
 {
@@ -122,9 +122,9 @@ typedef enum
 
 
 /**
- *  \brief Retrieves a Windows RT defined path on the local file system
+ *  \brief Retrieves a WinRT defined path on the local file system
  *
- *  \note Documentation on most app-specific path types on Windows RT
+ *  \note Documentation on most app-specific path types on WinRT
  *      can be found on MSDN, at the URL:
  *      http://msdn.microsoft.com/en-us/library/windows/apps/hh464917.aspx
  *
@@ -139,9 +139,9 @@ typedef enum
 extern DECLSPEC const wchar_t * SDLCALL SDL_WinRTGetFSPathUNICODE(SDL_WinRT_Path pathType);
 
 /**
- *  \brief Retrieves a Windows RT defined path on the local file system
+ *  \brief Retrieves a WinRT defined path on the local file system
  *
- *  \note Documentation on most app-specific path types on Windows RT
+ *  \note Documentation on most app-specific path types on WinRT
  *      can be found on MSDN, at the URL:
  *      http://msdn.microsoft.com/en-us/library/windows/apps/hh464917.aspx
  *

include/SDL_syswm.h

@@ -177,7 +177,7 @@ struct SDL_SysWMinfo
 #if defined(SDL_VIDEO_DRIVER_WINRT)
         struct
         {
-            IUnknown * window;          /**< The Windows RT CoreWindow */
+            IUnknown * window;          /**< The WinRT CoreWindow */
         } winrt;
 #endif
 #if defined(SDL_VIDEO_DRIVER_X11)