message: Promote redex-staging to redex-stable
  Summary:
  allow-large-files
  Sync redex-stable with the contents of redex-staging at revision
diff: @@ -955,7 +955,9 @@ void redex_frontend(ConfigFiles& conf, /* input */
  parser_stats.unknown_commands == 0);
  }
  - if (pg_config.keep_rules.empty()) {
  + auto ignore_no_keep_rules =
  + args.config.get("ignore_no_keep_rules", false).asBool();
  + if (pg_config.keep_rules.empty() && !ignore_no_keep_rules) {
  std::cerr << "error: No ProGuard keep rules provided. Redex optimizations "
  "will not preserve semantics without accurate keep rules."
  << std::endl;
  