Add copyright checks to sanity; make them verify copyright year is valid

Happy new year

Initial style guide notes for C

Add simple StartAndKillServer test

Update copyrights

Eliminate a layer of libraries in the end2end tests

Update link in credentials.h to point to grpc.io

Change CallData status before notifying CompletionQueue

BoringSSL integration

Fix Python test timeouts.

We've been assuming that the server upon invoking start was started.
This has been false; invoking start means that the server will
eventually be started, and to make this reliably observable requires
passing control to core.

Don't include grpc++ in buildtests_c

Add a test that overflows incoming flow control windows

Remove peer from ssl auth context

Remove unused vsprojects

Make intermediate directory path shorter than 260characters