bug#16859: tty-setup-hook can run twice

[Stefan Monnier]

> 1) Let-bind tty-setup-hook to nil round all calls to
> tty-run-terminal-initialization in term/*.el.

I don't like let-binding hooks (e.g. it doesn't work right when the hook
has both a global and a buffer-local value).

> 2) Move running of tty-setup-hook out of tty-run-terminal-initialization,
> into tty-create-frame-with-faces and command-line.

I haven't looked at it, but it sounds preferable, yes,


        Stefan