[Tizen] Move MediaServer dbus objects to worker thread

This patch adds new worker thread with g_main_loop for async
dbus call processing.
Merge pull request #291 from alexshalamov/add_worker_thread_to_mediaserver

[Tizen] Move MediaServer dbus objects to worker thread
[Tizen] Add support for missing virtual roots

This patch adds support for missing virtual roots:
wgt-package, wgt-private, wgt-private-tmp and ringtones.
Merge pull request #290 from alexshalamov/implement_widget_storage_support

[Tizen] Add support for missing virtual roots
[TEMP] Fix coding style check error

This commit can be reverted after cpplint.py updated with
CL https://codereview.chromium.org/269013009/
Merge pull request #299 from halton/style

[TEMP] Fix coding style check error
SysInfoDisplayWayland: Make Display adhere to our coding style.

cpplint.py was recently updated in depot_tools, and introduces a newer
style check for the indentation of items in a class declaration.
Merge pull request #300 from rakuco/SIDW-style-fix

SysInfoDisplayWayland: Make Display adhere to our coding style.
Bump version to 0.55
[Content] TCT crash and passrate fixes

Implement scanFile method which is heavily used by the TCT web api test suite.

Fix a crash for filter with invalid parameters (no bug yet).

Rename uri to path conversion methods more aligned with chromium.

Add test code for scanFile
[Tizen] Add runtime deps needed by the Content API

In order to run Content API properly, the following packages needs to be installed

- media-data-sdk - creates the media database (/opt/usr/dbspace/.media.db)
- media-tumbnail-server - service to create tumbnails. Pulls is also media-server.
Merge pull request #301 from poussa/more-deps-1

[Tizen] Add runtime deps needed by the Content API
Merge pull request #297 from poussa/tct-fixes-1

[Content] TCT crash and passrate fixes
[Tizen] Remove media-data-sdk dependency

Since https://review.tizen.org/gerrit/16493/ is now merged,
the media-data-sdk is not needed anymore. The .media.db is nwo created
by the media-server package which is pulled in my the media-thumbnail-server.
Bump version to 0.56
[Speech] Fix the js api for vocalizer

BUG=XWALK-1573
Merge pull request #298 from mrunalk/media_speech_fix

[Speech] Fix the js api for vocalizer
Bump version to 0.57
Correct --external-extensions-path for 64-bit

The TEC extensions libraries are delivered into different directory
varies 32-bit (/usr/lib) and 64-bit (/usr/lib64), the script need
to aware this difference.

BUG=XWALK-1624
Merge pull request #306 from halton/64-script

Correct --external-extensions-path for 64-bit