Conflicts:
	include/grpc/compression.h

Introduced compression levels as an abstraction for the actual algorithm

Disallow started request writers on GRPCCall init

Prints test names as ruby tests run

make sure docker image is up-to-date before each build

Document core behavior w.r.t. argument lifetimes

Also clean up some excess whitespace and make some notes about ownership.

state (including channels)

Support sending and showing received metadata in grpc_cli

New core shutdown API

Link to official protobuf podspec in the README

undo hotfix from #1731

Merge branch 'fix_intermediary_low_test_for_1577' of github.com:nathanielmanistaatgoogle/grpc into merge-merge-merge

It was still linking to my pull request's podspec.

temporary hotfix before backup poller removal is done

Pull request #1577 removes the backup poller internal to completion
queues so this test needs to use extra threads to drive the work done
inside the completion queues by continuously calling each completion
queue's get method.

can be removed from C++ lock.

Transforming gRPC.podspec to use build.json instead of globbing.