removed diagnostic

- Added Unit tests for Softmax MKLDNN Forward

Added fix for div by 0 to happen in cross_entropy backward

Conflicts:
	paddle/fluid/operators/CMakeLists.txt

- Cosmetic fixes to SoftMax MKLDNN fluid operator

Added misssing softmax fluid operator file

Disabled MKLDNN softmax operator by default

Fix to softmax op unittest merge

clang_formater fixes

clang_formatter fixes

- Name changing of softmax mkldnn operator to maintin consistency
  across codebase

- updated comment

fix to comment

move two images

Limit the symbol table of fluid shared library.

Add distributed lookup table design

Remove unnecessary clone of program in C++ Executor.Run

Add float16 support for pool 2d operator

Add float16 support for cast op

add gserver to capi dep

rm unused private field in profiler

fix regularizer when gradient is None

Update cpp reader doc

delete unused images

Add float16 support for cudnn conv2d

remove legacy design image

Fix a program copy regression.

fix AttributeError: 'module' object has no attribute 'framework_pb2'

add math_function to selected_rows_functor dependency list

change the dir of docs

Single device on se-resnet reduce from 0.56 to 0.50

* New test for testing channels / concurrency

* Formatting fix

* update en doc for Distributed Training

* typo fix