[Tizen] Remove scoped_ptr for TizenSystemIndicatorWidget

Remove scoped_ptr for TizenSystemIndicatorWidget since
it has the same lifetime with its owner WidgetContainerView.
[Tizen] Fix a crash in NativeAppWindowTizen::~NativeAppWindowTizen()

Observer must be removed in OnWindowDestroying and not in the destructor,
as the aura::Window is already destroyed when the NativeAppWindowTizen
destructor runs.

BUG=https://crosswalk-project.org/jira/browse/XWALK-782
[application] Normalize Application termination API

We should use the word "Terminate" in every method name concerning an application's termination.
Merge pull request #1506 from nagineni/XWALK-782

[Tizen] Remove scoped_ptr for TizenSystemIndicatorWidget
Merge pull request #1511 from nagineni/XWALK-782-2

[Tizen] Fix a crash in NativeAppWindowTizen::~NativeAppWindowTizen()
Merge pull request #1515 from pozdnyakov/Normalize_App_Term_API

[application] Normalize Application termination API
Fix the coding style in the orientation ext JavaScript

Fix valid cases pointed out by JSLint and avoid using
deprecated JavaScript methods.
Merge pull request #1516 from kenchris/style

Fix the coding style in the orientation ext JavaScript
[Application][D-Bus] Fix crash when shutting down

DBusManager owns the Bus connection and was being destroyed before the
service provider that uses it.

TEST=Loaded xwalk --run-as-service and xwalkctl <APP_ID> then closed the
window. The first process should not crash but exit cleanly.
Merge pull request #1517 from cmarcelo/dbus-shutdown-crash

[Application][D-Bus] Fix crash when shutting down
Bump version to 4.32.75.0
[Android] Fix ScreenOrientation's package missing issue when integration with Cordova.

Because the ScreenOrientation API is in the ".../api/screen_orientation"
folder, but it's packaged as ".../api/screenorientation/...".

Move the ScreenOrientation implementation from "screen_orientation" folder
to "screenorientation" folder.