[*][Genlist] Added more scroller smart callbacks. Applied upstream

[*][Genlist] Added more scroller smart callbacks. Applied upstream
commit r62710 and r62711.

elm genlist: Added "scroll,anim,start", "scroll,anim,stop",
"scroll,drag,start", "scroll,drag,stop" smart callbacks to genlist.
elm gengrid: Added "scroll,anim,start", "scroll,anim,stop" smart
callbacks to genlist.

git-svn-id: https://svn.enlightenment.org/svn/e/trunk/elementary@62710 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

elm gengrid: Oops, I added more changes to the previous commit.

git-svn-id: https://svn.enlightenment.org/svn/e/trunk/elementary@62711 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

Change-Id: I26b9244462ffe6dcc6d607590ddfedc274ca9a46