-- Moves promiseHasHandlerSymbol to inobject property
-- Ports PromiseResolveClosure to TF
-- Fix a non spec async-await test which fails now because we do a map
check for native promise check (instead of IsPromise). Changing the
constructor (in the test) invalidates the map check.

This patch results in a 7.1% performance improvement in the bluebird
benchmark (over 5 runs).

BUG=v8:5343

Review-Url: https://codereview.chromium.org/2541283002
Cr-Commit-Position: refs/heads/master@{#41569}

This is similar to how the native context has an empty function set up as it's closure field.

BUG=666984

Review-Url: https://codereview.chromium.org/2528603002
Cr-Commit-Position: refs/heads/master@{#41212}

- Creates a new promise-utils.{h, cc} which refactors out the
logic to create resolving functions. This is shared between the
runtime functions and builtins.

- Changes PromiseResolveThenableJobInfo to store the context
since we no longer create the resolving functions in JS.

- Changes EnqueuPromiseResolveThenableJob to take in the promise and
  not the callbacks.

BUG=v8:5343

Review-Url: https://codereview.chromium.org/2487053002
Cr-Commit-Position: refs/heads/master@{#40941}