* Fix CPPLint errors in multiclass_nms, nccl, nce, reduce and save_load_combine

* Fix

Fix a bug in save_inference_model and prune when the program is initailized by load_inference_model (#10011)

* Fix bug in save_inference_model and prune when the program is initialized by load_inference_program.

* Save the transpiled program instead.

* Privatize OpHandleBase

* Clean up a few private members

* translate-hrnn-api-dwk

* translate-hrnn-api-dwk

* translate-hrnn-api-dwk

* translate-hrnn-api-dwk

* modifications according to comments

modifications according to comments

Add Chinese translation for k8s_aws

Unify REGISTER_OP and REGISTER_OPERATOR

Add cutoff parameter to word_dict for IMDB

fix pool and conv3d unittest when paddle is not build with gpu

Split byref op

Remove redundent pserver block

Correctly implement destructor of ParallelExecutor

Fix FetchTensor on CPU

Add 4 docs to fluid/dev

Clean MultiDevicesGraphBuilder

Remove `dense_vector` from v2 api documents

Use mutex to stablize ncclCtxMap

Add neural transformer leanring rate decay function

Fix bugs in local_scopes

* Add topk Python API.

* Add unit test.

* Remove the repeated API.

Disabling Channel Test to fix CI

Add parallel executor tests

fuse batch norm for conv operator 

- Added Epsilon (preventing softmax output from being too small) for softmax MKLDNN op

Fix conv_mkldnn_op.cc which is causing CI failure