grpc - RPC system from Google

	Commit message (Expand)	Author	Age
*	Merge branch 'master' of https://github.com/grpc/grpc into tracing++	Noah Eisen	2017-11-13
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* \	Merge branch 'master' of https://github.com/grpc/grpc into tracing++	ncteisen	2017-11-10
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\| \| *	Merge github.com:grpc/grpc into lfe3	Craig Tiller	2017-11-10
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\| \| *	s/NULL/nullptr	Craig Tiller	2017-11-10
\| * \|	merge with head	yang-g	2017-11-06
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\| * \|	log GRPC_POLL_STRATEGY when fail to find polling engine	yang-g	2017-11-06
\| \| *	Update clang-format to 5.0	Craig Tiller	2017-11-03
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* /	C++ize tracing	Craig Tiller	2017-10-16
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*	Merge github.com:grpc/grpc into flowctl+millis	Craig Tiller	2017-10-05
*	Changes for C to C++. Adding extern C to header files for compatibility.	Yash Tibrewal	2017-10-02