bunpen: more verbose logging when we exec

pkgs/additional/bunpen/main.ha

@@ -27,7 +27,7 @@ fn do_exec(path: str, args: []str) (os::exec::error | void) = {
 
 fn prepare_env(req: config::cli_request) config::exec_params = {
   {
-    let argv_str = strings::join(" ", os::args[1..]...);
+    let argv_str = strings::join(" ", os::args...);
     defer free(argv_str);
     log::printfln("invoked with: {}", argv_str);
   };