Collect Receiver feedback for abstract/strict equality in Ignition and
use it in TurboFan to optimize JSEqual and JSStrictEqual operations to
pointer equality instead of having to call Equal/StrictEqual builtins.

R=jarin@chromium.org
BUG=v8:5267,v8:5400

Review-Url: https://codereview.chromium.org/2639883002
Cr-Commit-Position: refs/heads/master@{#42435}