[RFR]: Interpreter method entry/exit

[Arthur Eubanks]

>
> There seems to be a permission issue with your webrev?
>
All of my webrevs are down from the webpage even though I can see them from
ftp. I think it's a transient issue, we'll see tomorrow.

>
> Btw, are you by chance updating the wiki with the commands to be run now
> or should I do it at some point in the future?
> Jc
>
I'll update the wiki in a separate change.