fixes BVLC/caffe#3163
fixes BVLC/caffe#3163

wangg12/caffe,tackgeun/caffe,gnina/gnina,tackgeun/caffe,gnina/gnina,gnina/gnina,gnina/gnina,CZCV/s-dilation-caffe,gnina/gnina,tackgeun/caffe,tackgeun/caffe,CZCV/s-dilation-caffe,gnina/gnina,CZCV/s-dilation-caffe,CZCV/s-dilation-caffe,wangg12/caffe,wangg12/caffe,wangg12/caffe