grpc - RPC system from Google

	Commit message (Expand)	Author	Age
*	gchandle is not needed anymore	Jan Tattermusch	2015-06-05
*	Stop using native callbacks for C#	Jan Tattermusch	2015-06-05
*	Merge github.com:grpc/grpc into bye-bye-completion-queue-pie	Craig Tiller	2015-05-06
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* \|	C# fixes for #1472 core API cleanup	Jan Tattermusch	2015-05-04
\| *	stylecop fixes	Jan Tattermusch	2015-05-04
\| *	Fixes for C# cancellation support	Jan Tattermusch	2015-05-04
\| *	added stats with number of active native calls, useful for debugging	Jan Tattermusch	2015-05-04
\| *	A new version C# API based on async/await	Jan Tattermusch	2015-05-04
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*	code style fixes based on StyleCop warnings	Jan Tattermusch	2015-03-11
*	Split async call into server and client classes sharing the same base.	Jan Tattermusch	2015-03-06