[pycaffe] test coord_map
[pycaffe] test coord_map

- test known mappings: conv-pool-deconv stack, ReLU and 1x1 conv
- test effects of padding
- test rectangular/anisotropic coordinate mapping, test N-D
- catch error cases: negative crop, scale mismatch, tops that are not
  spatially connected

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