Merge pull request #2461 from wang16/crosswalk-9

[Android] Fix the issue about onJavascriptModalDialog was not called.
Bump version to 9.38.208.2
[Android] Compress AAR packages generated with Python's zipfile.

By default, Python's zipfile module will store the files in the ZIP
archives it creates uncompressed, which makes the architecture-specific
AAR archives we host in 01.org quite big. x86 AAR packages are more than
double the size of a compressed ZIP archive, for example (43M vs 20M).

Fix this by explicitly creating ZipFile with zipfile.ZIP_DEFLATED.

BUG=XWALK-2688

(cherry picked from commit 8d45fba1a412914ddfddaa91074a11e349f71a09)
Roll 38.0.2125.101, first stable of M38.
Merge pull request #2488 from rakuco/backport-aar-optimization

[Android] Compress AAR packages generated with Python's zipfile.
Merge pull request #2491 from darktears/crosswalk-9

Roll 38.0.2125.101, first stable of M38.
Bump version to 9.38.208.3
[Android] Bring back enableRemoteDebugging API temporally

Some embedders needs to get the web socket url for remote
debugging their app. The legacy API enableRemoteDebugging
returns the url but it is inaccessible.
Bring it back before the new API to get the debugging url
available.

BUG=https://crosswalk-project.org/jira/browse/XWALK-2689
(cherry picked from commit e8aea8eaa530754eb4fd89fb8ddf8d306b888097)