[Android] Add icudtl.dat into xwalk_core_library

It's needed after rebase to chromium 35.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1389
[Android] Catch missing xwalk library make_apk.py

When creating (x86/ARM) packages, emit a warning if the
corresponding architecture libxwalkcore.so is not found.
If no packages have been created due to missing
libxwalkcore.so, abort with an error message.
[Android] Restore the function for '--icon'.

This patch is to restore the function for '--icon'.
If the developer specify the icon in the command line, this icon
will be used instead of the icons in manifest.json.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1368
[Application][Tizen] Move extension process logic to a standalone thread

The previous EP(ExtensionProcess) & launcher merge patch changed the launcher's
main thread glib message loop to Chromium message loop which is MessagePumpOzone
in Tizen. This leads to some asynchronous DBus function and signals cannot be
successfully called.

To divide the old launcher logic(mainly communicate with DBus) and new EP
logic this patch added a new XWalkLauncherExtensionService running in a separate
thread.
Update README.md
Merge pull request #1817 from seanlong/launcher_ep_service

[Application][Tizen] Move extension process logic to a standalone thread
Bump version to 6.35.119.0
Merge branch 'master' of github.com-crosswalk:crosswalk-project/crosswalk
[Android] Enable app cache on Android by default

Currently, app cache flag is enabled by default, but it can't work if
app cache path is not set explicitly. Actually, Chromium doesn't explore
the interface to setting app cache directory.

Crosswalk should not have this limitation, when no app cache is specified,
we should use chromium default cache path instead.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1355
Merge pull request #1816 from yinli/app_cache_enable

[Android] Enable app cache on Android by default
Merge pull request #1811 from wang16/library_m35

[Android] Add icudtl.dat into xwalk_core_library
Bump version to 6.35.120.0
Merge pull request #1799 from wuhengzhi/multi_icon_refine

[Android] Restore the function for '--icon'.
[Runtime] Add Tizen Setting handler for widget application.

Add handler for Tizen setting element in Widget configuration, so
that we can parse and validate Tizen setting information.

This PR only supports 'hwkey' attribute at present, other attributes
e.g, 'background-support' will be added later when needed.
Merge pull request #1818 from shaochangbin/tizen-setting-handler

[Runtime] Add Tizen Setting handler for widget application.
[Tizen][Runtime] Enable to display navigation link in system web browser
when it's blocked by WARP.

For Tizen platform, when a navigation link is blocked by WARP policy,
it'd be opened in external web browser instead.

This patch also enable the complete WARP mode in Tizen.
Merge pull request #1810 from takethathe/warp

[Tizen][Runtime] Enable to display navigation link in system web browser when it's blocked by WARP.
Bump version to 6.35.121.0
DEPS.xwalk: Roll chromium-crosswalk (634d34e4 -> 15a25d19).

15a25d1 Merge pull request #145 from wang16/resource_m35
4423c80 [Android] Address Context leak in ResourceExtractor
6f158d0 [Android] Revert "Make the ResourceExtractor use the App context"
0eae511 Merge pull request #143 from halton/nacl
0151e36 [Backport] Add base.gyp:base_static as dependency of nacl component
[Android] Enable auto detect connectivity state change

1. Enable auto detect connectivity state change.
2. Add permission of ACCESS_WIFI_STATE.

BUG=XWALK-1324