That patch was not adopted, as I recall, mostly due to the requirement that it support partitioned tables.
i attached a small patch for its implementation.
Notice : inorder to avoid unpredictable result the patch did not allow limit clause without order by and vise versal.
I think both of those are ill-advised. To avoid deadlock, it is perfectly fine to want an order by without a limit.
And to facilitate the reorganization of partitions or the population of new columns in bite-size chunks, it is also fine to want limit without order by.
