Remove stages back-to-front in Pipeline destructor
Remove stages back-to-front in Pipeline destructor

j-o/gloperate,hpicgs/gloperate,j-o/gloperate,j-o/gloperate,cginternals/gloperate,cginternals/gloperate,hpicgs/gloperate,hpicgs/gloperate,hpicgs/gloperate,j-o/gloperate,cginternals/gloperate,hpicgs/gloperate,cginternals/gloperate