grpc - RPC system from Google

	Commit message (Collapse)	Author	Age
*	auto-fix most of licenses	Jan Tattermusch	2017-06-08
\|
*	clang-format	Craig Tiller	2017-03-31
\|
*	Reinstate one check, fix fall out	Craig Tiller	2017-03-30
\|
*	removed codegen/byte_buffer.h	David Garcia Quintas	2016-07-27
\|
*	clang-format	Julien Boeuf	2016-05-10
\|
*	Refactoring the core security code.	Julien Boeuf	2016-05-04
	As opposed to a flat directory, we now have the following structure: - security -context - credentials - composite - fake - google_default - iam - jwt - oauth2 - plugin - ssl - transport - util We have not refactored the test code yet but this PR is already large enough...