* #1159 bug fixed

* #1159 #1164 fixed

* Add count_include_pad support to AvgPool

* Fix python_cpp/test_topi_pooling.py

* Change auto to explicitly type, and fix format.

* add conv2d_NCHWc compute template

* add conv_NCHWc compute decl and schedules

* allow default avx schedule

* fix lint

* remove unused schedule

* remove import nnvm.reg

* pass schedule object to compute and schedule

* make ThreadPool thread local

* add return

* support dilation in conv2d and depthwise_conv2d

* handle dilated conv in extern libs (cudnn, miopen)

* add layout_transform. add schedule support for ndim>=5 for x86

* fix lint

Expose tvm.ndarray.empty which has already been implemented, just not yet documented.

* generalize pool2d to arbitrary layout

* explain more the layout support for pool

* allow missing factor size for pooling

* explain what factor size is used for

* fix typo

* name idx -> axis