R14: Fix constructor of GiGraphics. Add loadNextFrame().
R14: Fix constructor of GiGraphics. Add loadNextFrame().

aw691190716/vgcore,aw691190716/vgcore,aw691190716/vgcore,xuebao555/vgcore,xuebao555/vgcore,aw691190716/vgcore,xuebao555/vgcore,xuebao555/vgcore