Reenable --simd-object flag after M36 rebasing.

BUG=XWALK-1809
[Android] ManifestJsonParser: Use dict.get() when possible.

Instead of manually checking whether a key is present in a dict, just
use dict.get() with a default value.
Merge pull request #2018 from rakuco/use-dict-get-in-manifestparser

[Android] ManifestJsonParser: Use dict.get() when possible.
Merge pull request #2021 from huningxin/master

Reenable --simd-object flag after M36 rebasing.
Bump version to 7.36.147.0
[Runtime] Reconstruct load config xml.

In old logic we use a simple depth traversal to load xml, but it
hard to apply all rules according to
http://www.w3.org/TR/widgets/#step-7-process-the-configuration-document
So I reconstruct the logic of load config, and now it was more
comply with the standard process rule.

Besides this process will make the value we storage in DB
clearly.