Reworking the cascade kick to be Windows-specific.

This brings the Windows port more in-par with Linux. We're now making sure all of the pollsets are going to return immediately before calling the shutdown callback.

Changed argument names in Objective-C generated code

Fixed retain cycles in GRPCWrappedCall.m

php: refactor and cleanup some scripts

Remove const cast warning in GRPCSecureChannel.m

Expanded testing protocol

Let's inform the system of the lock to unlock...

Cascade-kick pollsets when shutting down.

On pollset shutdown, we need to unconditionally start the kick cascade.

In the case we're using a threadpool, depending on where the threads are waiting in completion queue's next, they'll get stuck on shutdown because we're only kicking one of them. Instead, let's cascade-kick the pollsets when we shutdown so that we make sure all of them are exitting properly.

Fixing Visual Studio 2013 build of grpc++.

Move some code out of src/ into tools/

Return dummy data for empty histograms

Make it less likely a build.json change triggers a merge conflict

Fixes #2190. In grpc_pollset_work we need to pass down which lock to unlock before actually doing something.

Add BUILD target for Objective-C's RxLibrary

Have Cocoapods rename includes in the core wrapper

Don't import using directories created by Cocoapods

Part of https://github.com/grpc/grpc/issues/2120
Depends on https://github.com/grpc/grpc/pull/2193

Fixes https://github.com/grpc/grpc/issues/2194 .

Part of fixing https://github.com/grpc/grpc/issues/2192

Part of fixing https://github.com/grpc/grpc/issues/2192

Part of fixing https://github.com/grpc/grpc/issues/2192

Part of fixing https://github.com/grpc/grpc/issues/2192

Part of fixing https://github.com/grpc/grpc/issues/2192

Conflicts:
	gRPC.podspec
	templates/gRPC.podspec.template

Move /include/... up on pod install, to put it on a search path Cocoapods supports

Bump version of grpc ruby for release on the release branch