[m-rev.] for post-commit review: generalize MLDS tail recursion support

[Zoltan Somogyi]

On Tue, 10 Oct 2017 07:23:47 -0400 (EDT), Julien Fischer <jfischer at opturion.com> wrote:
> > I sent this early this morning, but it has not shown up on the list yet.
> 
> It's certainly shown up on the list, I received it this morning.
> (It's in the archives here:
> http://lists.mercurylang.org/archives/reviews/2017-October/019551.html)

It didn't show up in my inbox, and now I see four other messages in the archive
about 8/16 bit conversions today that haven't shown up in my inbox (or my spam
folder) either. Did my email address get removed from the mrev mailing list?
Or did something else change on the mail server that could have this effect?

BTW, about having both little and big endian versions of from_bytes:
while a first order call can trivially reverse the arguments, you can't
easily do that if you want to curry just the first argument. Given that
the cost is so small, we may as well provide both forms.

Zoltan.