[Genlist] Applied upstream patch r62645.

[Genlist] Applied upstream patch r62645.

elm genlist: Fixed elm_genlist_item_insert_after() bug. Patch by
Chanwook Jung <joey.jung@samsung.com>

From: 정찬욱 [mailto:joey.jung@samsung.com]
Sent: Friday, August 19, 2011 4:40 PM
Subject: [E-devel] [Patch] bug in elm_genlist_item_insert_after

Dear developers.

I found the problem when group item is added using
elm_genlist_item_insert_after in genlist.
The new group item is refer to the group item list not item list.
Therefore
it is inserted in the wrong place.
I modified that if the new group item is inserted, refer to the last
item
of the after group item.
Thanks.

git-svn-id: https://svn.enlightenment.org/svn/e/trunk/elementary@62645 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

Change-Id: Ia95d4a5649875e37ff653f524b7fe22d41b02b70