[m-rev.] for review: pack args next to remote sectags

[Zoltan Somogyi]

On Tue, 28 Aug 2018 17:10:29 +1000, Peter Wang <novalazy at gmail.com> wrote:
> I only paged through to see how big the diff was. MR_arg_value_uncommon
> looks unused now.

Yes, it is. I deleted it.

> (If we want to promote a ROTD soon, it might be prudent to pick one
> created prior to this patch going in.)

Well, either before this diff, or one a couple of weeks *after* this diff,
with the arg packing turned on, including the packing of char (which
is next). That may be worth waiting for.

Zoltan.