message: Reduce number of threads used in test
  It takes forever to execute on Windows
diff: @@ -239,7 +239,7 @@ TEST(Transactions_Threaded)
  tk = table->get_key();
  wt->commit();
  }
  - const int num_threads = 100;
  + const int num_threads = 20;
  std::thread writers[num_threads];
  std::thread verifiers[num_threads];
  for (int i = 0; i < num_threads; ++i) {
  