Re-enable memcmp interceptor for TSan.

Re-enable memcmp interceptor for TSan.

But make it not strict. This is roughly the same behavior as we had
before the clang roll and the workaround in crbug.com/523384.

BUG=523384
Committed: https://crrev.com/5ae1e02429f0aa082ec2e2b524c38031087c47bc
Cr-Commit-Position: refs/heads/master@{#345991}

[eugenis, 2015-08-27 00:39:53]

eugenis@chromium.org changed reviewers:
+ kcc@chromium.org

[kcc1, 2015-08-27 16:13:13]

kcc@google.com changed reviewers:
+ kcc@google.com

[kcc1, 2015-08-27 16:13:13]

The CQ bit was checked by kcc@google.com

[kcc1, 2015-08-27 16:13:13]

lgtm

LGTM

[commit-bot: I haz the power, 2015-08-27 16:13:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1308023005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1308023005/1

[commit-bot: I haz the power, 2015-08-27 16:13:31]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-27 16:13:32]

No L-G-T-M from a valid reviewer yet. Only full committers are accepted.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[eugenis, 2015-08-27 18:02:47]

eugenis@chromium.org changed reviewers:
+ hans@chromium.org

[hans, 2015-08-27 20:24:04]

cc thakis fyi

lgtm

[eugenis, 2015-08-27 20:36:06]

The CQ bit was checked by eugenis@chromium.org

[commit-bot: I haz the power, 2015-08-27 20:36:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1308023005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1308023005/1

[commit-bot: I haz the power, 2015-08-27 21:18:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-27 21:19:09]

Patchset 1 (id:??) landed as
https://crrev.com/5ae1e02429f0aa082ec2e2b524c38031087c47bc
Cr-Commit-Position: refs/heads/master@{#345991}