Sync with the private code.

Sync with the private code.

commit a4ea3106538a3c75eeb8e9fe730eee66d2cc2a02
Author: Sung-jae Park <nicesj.park@samsung.com>
Date:   Tue Apr 22 17:57:52 2014 +0900
  Remove dependency of sec-product-feature

commit 327f620ea51a132122c03eeb3475332119be1396
Author: Sung-jae Park <nicesj.park@samsung.com>
Date:   Thu Apr 17 21:58:36 2014 +0900
  Add new method to get the PID of client process.

  Only if the client is in same host (localhost),
  Get the PID from socket and deliever it to the service core.

commit 9c6c30f4c6cf4a14f042d4cfb92bd25e6e834288
Author: Sung-jae Park <nicesj.park@samsung.com>
Date:   Thu Apr 17 20:38:22 2014 +0900
  Don't try to unpremultipling alpha value.
  For the sake for scrolling performance.

commit 3e1688e1833077a83dff4a86c17749d71be0fb8d
Author: youngsub ko <ys4610.ko@samsung.com>
Date:   Wed Apr 16 17:05:39 2014 +0900
  [notification service] fixed problem multicast packet about deleting notification sent to viewers when deletion isn't successful

commit 01929e7b0f5fc79d6c6ddef2f7be434f3131b089
Author: youngsub ko <ys4610.ko@samsung.com>
Date:   Wed Apr 16 15:28:34 2014 +0900
  [notification service] code cleanup

Change-Id: I286ce5fed15e4a29888024e637ae5cc03f7b456e