kernel32: Added GetSystemDefaultLocaleName().

dlls/kernel32/kernel32.spec

@@ -634,6 +634,7 @@
 @ stdcall GetStringTypeW(long wstr long ptr)
 @ stdcall GetSystemDefaultLCID()
 @ stdcall GetSystemDefaultLangID()
+@ stdcall GetSystemDefaultLocaleName(ptr long)
 @ stdcall GetSystemDefaultUILanguage()
 @ stdcall GetSystemDEPPolicy()
 @ stdcall GetSystemDirectoryA(ptr long)

dlls/kernel32/locale.c

@@ -931,6 +931,14 @@ LCID WINAPI GetSystemDefaultLCID(void)
     return lcid;
 }
 
+/***********************************************************************
+ *		GetSystemDefaultLocaleName (KERNEL32.@)
+ */
+INT WINAPI GetSystemDefaultLocaleName(LPWSTR localename, INT len)
+{
+    LCID lcid = GetSystemDefaultLCID();
+    return LCIDToLocaleName(lcid, localename, len, 0);
+}
 
 /***********************************************************************
  *		GetUserDefaultUILanguage (KERNEL32.@)