[Speech][IVI] : Implementation of Tizen IVI Speech API.

Following are the fixes for Tizen speech web api:
i) Run threaded glib mainloop for Tizen.
ii) Implements the missing speech to text api(setCBListener).

BUG=XWALK-1745
Merge pull request #311 from avalluri/speech

[Speech][IVI] : Fix XWALK-1745 - Implementation of Tizen IVI Speech API.
Bump version to 0.61
Remove hardcoded path for multiuser support

related to XWALK-1649
Merge pull request #305 from eurogiciel-oss/multi-user

Remove hardcoded path for multiuser support
Bump version to 0.62
[Tizen] Common xwalk utilities module for shared JavaScript code.

Initial method contains validation for mandatory and optional arguments.
Merge pull request #313 from poussa/xwalk-utils

[Tizen] Common xwalk utilities module for shared JavaScript code.
[Content] Add API argument validation

Validate the method arguments aganist the signature.
Throw TYPE_MISMATCH_ERR exception is no match.
Use the new xwalk.utils module.
Merge pull request #314 from poussa/tct-fixes-3

[Content] Add API argument validation
Bump version to 0.63
[Download] Use new C++ wrapper in common/extension.h

ExtensionAdapater should be deperacated by common::Extension and
common::Instance.
Fix build issue on desktop.

libtzplatform-config dependency is introduced by commit 0c5d1dc2, it
should be under Tizen profile only, otherwise desktop will fail to
configure.
Merge pull request #320 from halton/download_refac

[Download] Use new C++ wrapper in common/extension.h
[power] throw an exception instead of blocking forever

In synchronous calls, throw an exception instead of blocking
forever when the underlying system API returns an error.
Modified example to show usage.

BUG=XWALK-1390
Merge pull request #316 from eurogiciel-oss/XWALK-1390

[power] throw an exception instead of blocking forever
Merge pull request #321 from halton/tzplatform-config

Fix build issue on desktop.
[AudioSystem][IVI]: Implementation of Tizen Audio System/Control API.

This commit implements proposed Tizen System Volume API on xwalk:
  https://wiki.tizen.org/wiki/User:Tanuk/AudioSystemAPI
This commit also includes a demo application that demonstrates the
usage of the api.

This enables to write volume control/settings/mixer type of web applications
using xwalk.

BUG=XWALK-1330