This correctly marks functions containing a new.target reference as
being disabled with Crankshaft, which would have bailed out anyways.
Also note that this will trigger TurboFan for such functions and hence
widens the TurboFan intake valve.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1482733002

Cr-Commit-Position: refs/heads/master@{#32444}