* Get rid of the dependency of Go compiler when WITH_GOLANG is OFF.

* Minor modification to the documentation.

* Remove the downloading and installing of Go compiler when build developing Docker image for android.

* Minor modifcation to the documentation's format.

* Change the default value of WITH_GOLANG to OFF in paddle/scripts/docker/build.sh.

Add cluster-train document.

Fix conv_op bug

remove `import paddle.fluid` in conf.py.in

combine batch_size_like.cc into batch_size_like.h

* merge fluid dist tests

* update cmake

add warrper for detection map operator

Update conll05.py

* Fix dist demo error

* revert trainer_id

Extend current profiler for timeline and more features.

Tensorflow benchmark

Refine cmake for cudnn op

* Enhance bipartite_match_op to support argmax matching after bipartite matching.

* Fix typo error.

Refine the inference API and unittests

set the default option of WITH_FAST_BUNDLE_TEST be OFF

Fix send_recv unit test

Fix c-api doc style

* "try enhance concat op"

* "enhance the concat operator"

Fix the bug of conv2d 

fix short connection again