hw/xwin: Fix for MinGW-w64 DirectDraw headers

mingw-w64 headers handle NONAMELESSUNION earlier than mingw.org's, so it must be
defined before including any headers.  It also provides a ddraw.h, so use it.

Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>

hw/xwin/ddraw.h

@@ -1,3 +1,7 @@
+#ifdef __MINGW64_VERSION_MAJOR
+#include_next <ddraw.h>
+#define __XWIN_DDRAW_H
+#endif
 #ifndef __XWIN_DDRAW_H
 #define __XWIN_DDRAW_H
 

hw/xwin/win.h

@@ -133,6 +133,8 @@
 
 #define WIN_MAX_KEYS_PER_KEY	4
 
+#define NONAMELESSUNION
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <stdio.h>

hw/xwin/winms.h

@@ -30,7 +30,6 @@
  * Authors:	Harold L Hunt II
  */
 
-#define NONAMELESSUNION
 #define DIRECTDRAW_VERSION	0x0300
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN