grpc - RPC system from Google

	Commit message (Expand)	Author	Age
*	Update test for changed core HTTP header handling	Masood Malekghassemi	2015-09-21
*	gRPC protocol objects	Nathaniel Manista	2015-09-05
*	Merge pull request #3021 from ctiller/reject-the-stuffs	Yang Gao	2015-08-25
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\| *	Drop whitespace from Python test metadata keys	Nathaniel Manista	2015-08-25
* \|	Add cancel_all_calls to Python server	Masood Malekghassemi	2015-08-20
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*	Merge pull request #2878 from soltanmm/expose	Nathaniel Manista	2015-08-12
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\| *	Expose new core functionality to Python	Masood Malekghassemi	2015-08-12
* \|	Set Python user-agent string	Masood Malekghassemi	2015-08-06
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*	Reorganize Python tests	Masood Malekghassemi	2015-07-30