grpc - RPC system from Google

	Commit message (Collapse)	Author	Age
*	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...