Fixed glBindFramebuffer(0) issue for Direct Rendering optimization.  current_fbo wasn't being set to 0  so the above case wasn't being handled properly. 
Fixed glBindFramebuffer(0) issue for Direct Rendering
optimization.  current_fbo wasn't being set to 0 
so the above case wasn't being handled properly. 



git-svn-id: 6d771e449150288cc513807b7f4d2af31e9482bd@68392 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

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