message: add pthread naming when thread creation fails
diff: @@ -70,7 +70,7 @@ class PThread : public Thread {
  }
  int ret = pthread_create(&thread_, &attributes, &ThreadFn, params);
  // There is no mechanism for the thread creation API to fail, so we CHECK.
  - CHECK_EQ(ret, 0) << "Thread creation via pthread_create() failed.";
  + CHECK_EQ(ret, 0) << "Thread " + name + " creation via pthread_create() failed.";
  pthread_attr_destroy(&attributes);
  }
  