disable nccl test

skip mkl setting in v1 with Mac

Update release note v0.11.0

add v0.11.0 release note

Change release version

* Fix bug in MergeModel.cpp.

* Add a c-api inferface to initilize the thread environment of Paddle and add a GPU example.

* Add some note for paddle_init_thread and move the inplementation of paddle_error_string into a .cpp file.

* Add some comments.

* init decoder_trainer

* can run

* fix lod

* add sharelod to cross_entropy_grad_op

* add avg_cost to fetch list

* modify learning rate

* can run

* optimie code

* add early exit

* fix print

* revert test_understand_sentiment_conv.py

* add act to fc

add print_operators_doc in travis ci

message cxx compiler version

* fix gpu memory allocation policy

* refine codes

* fix code style

* follow comments

add script to check the cpu env

add softsign into doc.

add graph in IntelOptimizedReadme

Install dmidecode in product docker image

* Add HasCUDNN to detect if CUDNN is installed or not

* Fix CI

add MKLDNN LRN

Compile cblas library as static

Make ConvTransProjection support for dilation

fix typo and path issue in build from source doc