grpc - RPC system from Google

	Commit message (Collapse)	Author	Age
*	Update copyrights	Craig Tiller	2016-03-31
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*	Fix includes	Craig Tiller	2016-03-25
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*	Auto-changes	Craig Tiller	2016-03-25
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*	Add HTTP request parsing.	Matthew Iselin	2016-03-23
	This extends the existing http parser to support requests as well as responses. httpcli continues to exist and work as it has previously, though in the new directory src/core/http (to reflect the fact the directory now contains code relevant to parsing requests, which httpcli would not generally involve itself in).