Revert "Allow MinGW64 compilation in Windows/msys"

This reverts commit c3f350e3fb.

Conflicts:
	libs/platform/string.h

.gitignore

@@ -13,7 +13,6 @@ Doxygen
 
 ## ides/editors
 *~
-*.bak
 *.kdev4
 *.swp
 *.swo

apps/openmw/mwrender/videoplayer.cpp

@@ -385,7 +385,7 @@ class MovieAudioDecoder : public MWSound::Sound_Decoder
     }
 
     void open(const std::string&)
-#ifdef _MSC_VER
+#ifdef _WIN32
     { fail(std::string("Invalid call to ")+__FUNCSIG__); }
 #else
     { fail(std::string("Invalid call to ")+__PRETTY_FUNCTION__); }

apps/openmw/mwworld/worldimp.cpp

@@ -1,5 +1,5 @@
 #include "worldimp.hpp"
-#if defined(_WIN32) && !defined(__MINGW32__)
+#ifdef _WIN32
 #include <boost/tr1/tr1/unordered_map>
 #elif defined HAVE_UNORDERED_MAP
 #include <unordered_map>

components/files/configurationmanager.hpp

@@ -1,7 +1,7 @@
 #ifndef COMPONENTS_FILES_CONFIGURATIONMANAGER_HPP
 #define COMPONENTS_FILES_CONFIGURATIONMANAGER_HPP
 
-#if defined(_WIN32) && !defined(__MINGW32__)
+#ifdef _WIN32
 #include <boost/tr1/tr1/unordered_map>
 #elif defined HAVE_UNORDERED_MAP
 #include <unordered_map>

extern/sdl4ogre/sdlwindowhelper.cpp

@@ -31,11 +31,7 @@ SDLWindowHelper::SDLWindowHelper (SDL_Window* window, int w, int h,
 #ifdef WIN32
 	case SDL_SYSWM_WINDOWS:
 		// Windows code
-#ifdef __MINGW64__
-		winHandle = Ogre::StringConverter::toString((DWORD_PTR)wmInfo.info.win.window);
-#else
 		winHandle = Ogre::StringConverter::toString((unsigned long)wmInfo.info.win.window);
-#endif /* __MINGW64__ */
 		break;
 #elif __MACOSX__
 	case SDL_SYSWM_COCOA:

libs/platform/string.h

@@ -9,7 +9,7 @@
 #include <string.h>
 #if (defined(__APPLE__) && __MAC_OS_X_VERSION_MIN_REQUIRED < 1070) || defined(__MINGW32__)
 // need our own implementation of strnlen
-#if defined(__MINGW32__) && !defined(__MINGW64__)
+#ifdef __MINGW32__
 static size_t strnlen(const char *s, size_t n)
 {
     const char *p = (const char *)memchr(s, 0, n);