clone components hash to avoid webpack 2 immutable export (fix #4062)
clone components hash to avoid webpack 2 immutable export (fix #4062)

KingMario/vue,leemotive/vue,greennyreborn/vue,greennyreborn/vue,Kingwl/vue,pramudaprakash/GITHUB,Jinjiang/vue,vuejs/vue,Jinjiang/vue,KingMario/vue,leemotive/vue,pramudaprakash/GITHUB,cnchanning/vue,cnchanning/vue,pramudaprakash/GITHUB,cnchanning/vue,Hanks10100/vue,sreesirisha/GITMidtermexam,lizhiyao/vue,hanhongyuan/vue,lizhiyao/vue,Jinjiang/vue,KingMario/vue,gebilaoxiong/vue,gebilaoxiong/vue,pramudaprakash/GITHUB,vuejs/vue,optimizely/vue,Ddder-FE/vue,xueyaodeai/vue,xueyaodeai/vue,Ddder-FE/vue,hanhongyuan/vue,Hanks10100/vue,Kingwl/vue,sreesirisha/GITMidtermexam,Hanks10100/vue,sreesirisha/GITMidtermexam,leemotive/vue,greennyreborn/vue,leemotive/vue,hanhongyuan/vue,Hanks10100/vue,Jinjiang/vue,vuejs/vue,Kingwl/vue,sreesirisha/GITMidtermexam,xueyaodeai/vue,Ddder-FE/vue,Ddder-FE/vue,KingMario/vue,greennyreborn/vue,hanhongyuan/vue,xueyaodeai/vue,lizhiyao/vue,gebilaoxiong/vue,Kingwl/vue,vuejs/vue,lizhiyao/vue