PPC: [es6] Initial steps towards a correct implementation of IsCallable.

PPC: [es6] Initial steps towards a correct implementation of IsCallable.

Port 8a378f46d52ce64578c71313ed76a67592fbf63c

Original commit message:
    This turns the has_instance_call_handler bit on Map into an is_callable
    bit, that matches the spec definition of IsCallable (i.e. instances have
    [[Call]] internal methods).

    Also fix the typeof operator to properly say "function" for everything
    that is callable.

    Also remove the (unused) premature %_GetPrototype optimization from
    Crankshaft, which just complicated the Map bit swap.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Committed: https://crrev.com/6990fb1c19f6bd14895475d5081fccfc9ccfe750
Cr-Commit-Position: refs/heads/master@{#30576}

[dstence, 2015-09-03 18:14:38]

lgtm

[MTBrandyberry, 2015-09-03 18:16:59]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-09-03 18:17:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1330613005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1330613005/1

[commit-bot: I haz the power, 2015-09-03 18:44:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-03 18:44:58]

Patchset 1 (id:??) landed as
https://crrev.com/6990fb1c19f6bd14895475d5081fccfc9ccfe750
Cr-Commit-Position: refs/heads/master@{#30576}