MovieClip: set _parent when adding children to the display list
MovieClip: set _parent when adding children to the display list

... and not when constructing the symbol. This makes createEmptyMovieClip
actually work.

mbebenita/shumway,mozilla/shumway,tschneidereit/shumway,mbebenita/shumway,yurydelendik/shumway,yurydelendik/shumway,mbebenita/shumway,mbebenita/shumway,mbebenita/shumway,mozilla/shumway,yurydelendik/shumway,mozilla/shumway,tschneidereit/shumway,yurydelendik/shumway,tschneidereit/shumway,mozilla/shumway,mozilla/shumway,mozilla/shumway,yurydelendik/shumway,tschneidereit/shumway,yurydelendik/shumway,tschneidereit/shumway,mbebenita/shumway,mbebenita/shumway,mozilla/shumway,yurydelendik/shumway,mbebenita/shumway,tschneidereit/shumway,mozilla/shumway,tschneidereit/shumway,yurydelendik/shumway,tschneidereit/shumway