Better dmscript loading (now we load the script version, script
language identifier and the script source).

diff --git a/dlls/dmscript/dmscript_private.h b/dlls/dmscript/dmscript_private.h
index 26f7e68..fc446ac 100644
--- a/dlls/dmscript/dmscript_private.h
+++ b/dlls/dmscript/dmscript_private.h
@@ -78,6 +78,10 @@
 
   /* IDirectMusicScriptImpl fields */
   LPDMUS_OBJECTDESC pDesc;
+  DMUS_IO_SCRIPT_HEADER* pHeader;
+  DMUS_IO_VERSION* pVersion;
+  WCHAR* pwzLanguage;
+  WCHAR* pwzSource;
 };
 
 /* IUnknown: */