4270 ld(1) argument error reporting is still pretty bad

@@ -930,10 +930,11 @@
                          but no runpaths have been specified via %s"
 @ MSG_ARG_NOENTRY       "entry point symbol '%s' is undefined"
 @ MSG_ARG_UNSUPPORTED   "option %s is no longer supported; ignored"
 @ MSG_MARG_ONLY         "option %s can only be used with a %s"
 @ MSG_ARG_UNKNOWN       "unrecognized option '-%c'"
+@ MSG_ARG_LONG_UNKNOWN  "unrecognized option '%s'"
 @ MSG_ARG_USEHELP       "use the -z help option for usage information"
 
 
 @ MSG_ARG_FLAGS         "flags processing errors"
 @ MSG_ARG_FILES         "file processing errors. No output written to %s"