[turbofan] Pass new.target to arguments adaptor trampoline.

[turbofan] Pass new.target to arguments adaptor trampoline.

This changes the interface descriptor for the arguments adaptor to also
contain an explicit register for the new.target value. Note that the
stub still clobbers the register for now.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=bmeurer@chromium.org
BUG=v8:4544
LOG=n

Committed: https://crrev.com/c0356f1f6dceaff35e8aca1ab0709de0ba6d4b7a
Cr-Commit-Position: refs/heads/master@{#32117}

[Benedikt Meurer, 2015-11-19 14:19:23]

Nice. LGTM.

[Michael Starzinger, 2015-11-19 14:21:50]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2015-11-19 14:22:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1457313002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1457313002/1

[commit-bot: I haz the power, 2015-11-19 14:36:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-19 14:37:07]

Patchset 1 (id:??) landed as
https://crrev.com/c0356f1f6dceaff35e8aca1ab0709de0ba6d4b7a
Cr-Commit-Position: refs/heads/master@{#32117}