Version 4.3.61.36

Disable alignment handling in the serializer/deserializer.

TBR=ulan@chromium.org
BUG=v8:4291

Review URL: https://codereview.chromium.org/1223263002 .

Cr-Commit-Position: refs/branch-heads/4.3@{#41}
Cr-Branched-From: f5c0a23a-refs/heads/4.3.61@{#1}
Cr-Branched-From: 0a7d4f49-refs/heads/master@{#27508}