Tidy CTFE/miri

[RalfJung]

CTFE/miri (the code in src/librustc/mir/interpret and src/librustc_mir/interpret) is currently exempt from tidy:

rust/src/tools/tidy/src/lib.rs

Lines 79 to 80 in 24bc544

	"src/librustc/mir/interpret",
	"src/librustc_mir/interpret",

That should not be hard to fix, it is mostly a matter of adding a license header everywhere and breaking long lines into less than 100 characters. Basically, start by removing the above two lines from tidy, and then ./x.py --stage 1 test tidy will tell you all that needs fixing.

[lovesegfault]

@RalfJung I'd like to take this, if that's OK :)

[RalfJung]

That's perfect :) Let me know if you need anything!

[lovesegfault]

@RalfJung Is this the correct license header?

// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

[RalfJung]

Yeah that looks all right (you first had a different year? My email notification says something else^^)

[lovesegfault]

@RalfJung Yeah, I had 2013-2015 before, since I just pasted it from some random file, but I updated it to just say 2018

[memoryruins]

Impeccable timing #53617 #53654

[RalfJung]

Well, yeah^^

[lovesegfault]

Hehehe