Various patches are applied.

Various patches are applied.

Patch 8/8
   Update language change event handling code.

Change the env value too.
   Region & Language is handles separately.

   So I separate them using VCONFKEY like app-core.

   Region & Lang.

Patch 7/8
   Care the language change notification.

Patch 6/8
   Handling the reply packet correctly.

Patch 5/8
   Define smack rule for vconf key.

Patch 4/8
   Don't terminate the provider even if it gets SIGTERM.

Patch 3/8
   Remove printf and update systemd service file.

Patch 2/8
   Update systemd service file.

Patch 1/8
   Implement the utility service.

   1. Service routine updated.
      If a client is disconnected, service routine will be called with packet NULL.

   2. Utility service is implemented.
      For generating the shortcut icon image, this utility service is prepared.
      Master just route the request & event for generating shortcut icon.
      Then the service daemon will be launched. and it will start generating icon image file.
      The image file is created in specified folder & name by client.
      So the client has to manage the created image file.

   3. service_common_timer API is implemented.
      Using timerfd. Now the timer event can be handled in a separated thread.

Change-Id: I9ce2546aea86c324ea9846d9dc673d6475b706c3