[turbofan] Fix and enable property stores.

[turbofan] Fix and enable property stores.

Fix lookup for storing to properties, and also make sure we don't embed
deprecated map (using Map::TryUpdate).

R=jarin@chromium.org
BUG=v8:4470
LOG=n

Committed: https://crrev.com/70158828b3db8e582344272c6c11a957f4d8b2c8
Cr-Commit-Position: refs/heads/master@{#31509}

[Jarin, 2015-10-23 10:18:53]

lgtm

[Benedikt Meurer, 2015-10-23 10:28:32]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-10-23 10:28:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1424523002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1424523002/20001

[commit-bot: I haz the power, 2015-10-23 10:29:57]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-23 10:30:25]

Patchset 2 (id:??) landed as
https://crrev.com/70158828b3db8e582344272c6c11a957f4d8b2c8
Cr-Commit-Position: refs/heads/master@{#31509}

[Michael Achenbach, 2015-10-23 11:15:22]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/1414743005/ by machenbach@chromium.org.

The reason for reverting is: [Sheriff] Breaks benchmarks:
http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug%20-%2....