[Phone] Added IVI Phone support

This extension implements the phone interfaces for IVI using phoned.
It replaces the existing wrt-plugins-ivi-hfp used by Modello home screen.

Original wrt plugin
https://review.tizen.org/git/?p=profile/ivi/wrt-plugins-ivi-hfp.git

It implements the following api:

- selectRemoteDevice()
- unselectRemoteDevice()
- getSelectedRemoteDevice()
- invokeCall()
- answerCall()
- hangupCall()
- activeCall()
- muteCall()
- getContacts()
- getCallHistory()
- addRemoteDeviceSelectedListener()
- removeRemoteDeviceSelectedListener()
- addCallChangedListener()
- removeCallChangedListener()
- addCallHistoryEntryAddedListener()
- removeCallHistoryEntryAddedListener()
- addCallHistoryChangedListener()
- removeCallHistoryChangedListener()
- addContactsChangedListener()
- removeContactsChangedListener()

BUG=XWALK-1661

Signed-off-by: Jimmy Huang <jimmy.huang@intel.com>
Merge pull request #319 from jimmy-huang/master

[Phone] Added IVI Phone support
Bump version to 0.70
[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
Merge pull request #325 from avalluri/audiosystem

[AudioSystem][IVI]: Implementation of Tizen Audio System/Control API.
Bump version to 0.71
[Bluetooth] Implement API based on Tizen bluetooth framework

Make 3 bluetooth extension backends : bluez4, bluez5 and tizen_capi

- add bluetooth_instance_capi.* source code using Tizen bluetooth C API
- remove Tizen C API calls from bluez4 backend
- fix bluez5 backend build
- modify device class major, minor and services JSON messages

BUG=XWALK-1065

Signed-off-by: Corentin Lecouvey <corentin.lecouvey@open.eurogiciel.org>