Lots of warning fixed, one missing WINAPI in ddraw.c added.

diff --git a/misc/registry.c b/misc/registry.c
index fa0454d..0ba7b98 100644
--- a/misc/registry.c
+++ b/misc/registry.c
@@ -39,6 +39,7 @@
 #include "heap.h"
 #include "debug.h"
 #include "xmalloc.h"
+#include "options.h"
 #include "winreg.h"
 #include "winversion.h"