dxdiag: Make dxdiag a Unicode rather than ANSI program.

programs/dxdiag/Makefile.in

@@ -4,7 +4,7 @@ TOPOBJDIR = ../..
 SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 MODULE    = dxdiag.exe
-APPMODE   = -mwindows
+APPMODE   = -mwindows -municode
 IMPORTS   = kernel32
 
 C_SRCS = \

programs/dxdiag/main.c

@@ -20,8 +20,9 @@
 
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
+#include "wine/unicode.h"
 
-int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR cmdline, int cmdshow)
+int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPWSTR cmdline, int cmdshow)
 {
     return 0;
 }