[*][evas_gif_loader] fix after image problem of gif current gif only support disposal mode 1. but if disposal mode is 2(restore background), it draw image base on previous image I add code support disposal mode 2
[*][evas_gif_loader] fix after image problem of gif
current gif only support disposal mode 1.
but if disposal mode is 2(restore background), it draw image base on previous image
I add code support disposal mode 2

Change-Id: Ie82cd34cbd57d5ed3b801632990e774263eda09a

TizenChameleon/uifw-evas,TizenChameleon/evas,TizenChameleon/uifw-evas,TizenChameleon/uifw-evas,TizenChameleon/evas,TizenChameleon/evas,TizenChameleon/evas,TizenChameleon/uifw-evas