make parseable for splint

- replace non standard u_char with unsigned char (ANSI)
- advice splint to ignore variadic macros
- move declarations from the middle to top of functions (C90)
- replace local library includes <> to ""

mbus/mbus.c

@@ -8,7 +8,7 @@
 //
 //------------------------------------------------------------------------------
 
-#include <mbus/mbus-protocol.h>
+#include "mbus-protocol.h"
 
 //
 //