Re: WAIT FOR command should do some query jumbling

Hi Alexander,

> Two things today: waits differing only in the timeout get an entry
> each,

I agree this is not ideal, and it's the point I raised earlier.

> and so does the same wait with its options written in another
> order.

I am not sure we should add the additional complexity in the custom
jumble to deal with this. I don't anticipate this will be a problem in
the real world. Scripts and drivers will use the same order. Also we
don't really guarantee that in other commands:

```
VACUUM (ANALYZE, VERBOSE) and VACUUM (VERBOSE, ANALYZE)
```

give different queryIds, and the same is true of COPY and every other
command taking an option list.

If we want option order to not affect the queryId, I think we should
teach jumbling to do this for all commands that take options; the
consumers of utility_option_list and copy_generic_opt_list, and
probably some other places.

So my preference is to deal with the TIMEOUT jumbling only, and
keep the ordering aspect out of this for now.

Maybe others have a different opinion.

--
Sami Imseih
Amazon Web Services (AWS)