- Finished draft of pooling reusing of operators

- Using gethash in PoolGrad added

- Removed diagnostic

- Added pool mkldnn grad reusing of primitives

- Added diagnostic

- Removed diagnostic

- added dependency to mkldnn data type for pooling mkldnn

- Added mkldnn memory data type determining based on template type of op

- Compilation warning fix

- codying style fixes

* fix cmake error

* update fix

add mkldnn to paddle lib

"change eigen mirror"

Draft for train by parallel executor

improved the documentation for sequence_pool function

Fix signed/unsigned comparison warning

Support nccl2 dist train in trainer

benchmark/fluid script支持多卡训练

add pybind.h to inference lib for static link

Make tensor support uint8

Refine fetch op handle

Polish cmake

* fix build capi

* update by comment

* "fix ci"

* "fix network config"

* "rerun ci"