[builtins] Add support for NewTarget to Execution::New.

[builtins] Add support for NewTarget to Execution::New.

Introduce new builtins Construct and ConstructFunction (in line
with the Call and CallFunction builtins that we already have) as
proper bottleneck for Construct and [[Construct]] on JSFunctions.
Use these builtins to support passing NewTarget from C++ to
JavaScript land.

Long-term we want the CallConstructStub to be used for
gathering feedback on entry to construction chain (i.e. the
initial new Foo), and use the Construct builtins to do the
actual work inside the construction chain (i.e. calling into
super and stuff).

MIPS and MIPS64 ports contributed by akos.palfi@imgtec.com.

R=jarin@chromium.org
BUG=v8:4430
LOG=n

Committed: https://crrev.com/1dfac69f1fb5ad8e2db2d5be591c094def55d451
Cr-Commit-Position: refs/heads/master@{#30857}

[Benedikt Meurer, 2015-09-21 06:31:12]

Patchset #2 (id:20001) has been deleted

[Benedikt Meurer, 2015-09-21 06:31:19]

Patchset #1 (id:1) has been deleted

[Benedikt Meurer, 2015-09-21 07:34:05]

bmeurer@chromium.org changed reviewers:
+ jarin@chromium.org

[Benedikt Meurer, 2015-09-21 07:36:26]

Hey MIPS people,

Please port this to mips and mips64.

Thanks,
Benedikt

[Benedikt Meurer, 2015-09-21 07:57:52]

Patchset #1 (id:40001) has been deleted

[Benedikt Meurer, 2015-09-21 07:58:01]

Patchset #1 (id:60001) has been deleted

[Benedikt Meurer, 2015-09-21 07:58:55]

Hey Jaro,

This is next step in Execution::New/Call refactoring, only one step away from
having a single bottleneck for unified callable/constructor handling. :-)
Please take a look.

Thanks,
Benedikt

[Jarin, 2015-09-21 21:44:12]

lgtm

[paul.l..., 2015-09-22 03:54:39]

Hi Benedikt, please find MIPS ports from Ákos in
https://codereview.chromium.org/1346963005/

[Benedikt Meurer, 2015-09-22 04:01:29]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2015-09-22 04:01:29]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/1359583002/#ps100001
(title: "REBASE. Merge mips and mips64 ports.")

[commit-bot: I haz the power, 2015-09-22 04:01:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1359583002/100001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1359583002/100001

[commit-bot: I haz the power, 2015-09-22 04:27:19]

Committed patchset #2 (id:100001)

[commit-bot: I haz the power, 2015-09-22 04:27:34]

Patchset 2 (id:??) landed as
https://crrev.com/1dfac69f1fb5ad8e2db2d5be591c094def55d451
Cr-Commit-Position: refs/heads/master@{#30857}