* Refine doc of uniform_random and fix dtype
* Update defaule value in the arguments

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parameters within a Layer instance should be unique.

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* refine profiler && add runtime tracer

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* fix bug && test=develop

* add thread id map && test=develop

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* testing

* bug fix

* remove cuda event && refine code && test=develop

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* fix windows temp file && test=develop

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* fix windows bug && test=develop

* fix start up issue && test=develop

* code polish &&  test=develop

* remove unused code && test=develop

* add some cupti cbid && test=develop

* add FLAGS_multiple_of_cupti_buffer_size && test=develop

* fix compile error && test=develop

* add keyword && test=develop

* fix && test=develop

* code polish && test=develop

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* fix params with only 1 dim
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* Enable momentum operator for a ngraph engine
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* Update tests
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* Unnecessary line of the code as intended was removed
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* Enable cross_entropy operator for a ngraph engine
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* Update tests
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* Added PADDLE_ENFORCE for the batch_norm operator
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* Update the message about which format are supported right now
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* Correct the comment in control_flow.py.

* Correct the argument list of ops.
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* Update API.spec.
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* Skip op_callstack attr for all op apis.
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* Remove use_mkldnn and is_test from python api.
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* Remove use_mkldnn and is_test from op_proto_maker and hard-coding them in python when generating doc string.
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