It shouldn't be an error to have an empty configuration file. This

causes some shift-reduce conflicts, but I think they are OK.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@255 81a1dc3b-b13d-400b-aceb-764788c761c2

avrdude/config_gram.y

@@ -148,7 +148,9 @@ def :
     strncpy(default_serial, $3->value.string, PATH_MAX);
     default_serial[PATH_MAX-1] = 0;
     free_token($3);
-  }
+  } |
+
+  /* empty */
 ;