Rename ArcWake to Wake

[taiki-e]

Since both methods take Arc as an argument, it should not be difficult to understand that this trait is based on Arc. Also, I think this should be near to the API we want to add to std/alloc in the future.

[cramertj]

I have no other particularly strong feelings about this aside from the fact that this makes the trait sound more canonical, rather than like a convenient helper. cc @seanmonstar @carllerche who may have opinions about this.

[LucioFranco]

Is making the ArcWake the Wake the right choice if down the line executors that do not need the atomic ref count?

[carllerche]

I don't have any opinion. ArcWake is descriptive. It also is probably the strategy that should be used unless there is a reason not to.

[cramertj]

Is making the ArcWake the Wake the right choice if down the line executors that do not need the atomic ref count?

@LucioFranco Given that the Wake trait is a convenience which needn't be used by all executors, and that many executors (most?) will, I think, need the refcount, it makes sense to me to make this ergonomic. However, I don't particularly care either way here and would be happy to defer to someone with a stronger opinion :)

[LucioFranco]

Yeah, that makes sense, though I think the descriptiveness is actually nice and clear imho. There are a lot of "wake" terms flying around and I think keeping it ArcWake just makes more sense. In the end we use this only in a few spots so im not too worried. Just thought I'd leave my opinion :)