- added circular buffering for channels

- added stderr support for the client
- cleaned up a bunch of "unused" warnings, duplicated header definitions
- added exit-status support for the client

--HG--
extra : convert_revision : 5bdf806d8b440c87f7235414662f4189195618f4

includes.h

@@ -128,4 +128,14 @@ typedef u_int16_t uint16_t;
 #define LOG_AUTHPRIV LOG_AUTH
 #endif
 
+/* so we can avoid warnings about unused params (ie in signal handlers etc) */
+#ifdef UNUSED 
+#elif defined(__GNUC__) 
+# define UNUSED(x) UNUSED_ ## x __attribute__((unused)) 
+#elif defined(__LCLINT__) 
+# define UNUSED(x) /*@unused@*/ x 
+#else 
+# define UNUSED(x) x 
+#endif
+
 #endif /* _INCLUDES_H_ */