This change pulls out a separate pollset_kick module, which currently
uses a freelist of pipes dynamically assigned to pollsets when they
enter polling rather than the previous racy sharding mechanism.

We ultimately may wish to eliminate the dynamic assignment for multipoll
sets, but this should be sufficient for the moment.

Factor out the pollset kicking mechanism and eliminate sharding

Instead of third party simplejson module, to save a dependency.

Opportunistically use perftools if installed.

Yay fewer dependencies.

Changing tabs for spaces.

Instead of C++ or not C++, name C++ and C, in preparation for being able to name other languages in the future.

Add a template to generate a complete list of tests for C/C++, and use it to generate the list of binaries to run tests for.

Conflicts:
	build.json

Generate tests to run from build.json, not by globbing the binaries directory

Add a tool to cleanup build.json

Conflicts:
	src/core/transport/chttp2_transport.c

Allow secure connections with fling server

Disconnect on bad connection prefix

Add extern where its required

Mac Compatibility Fix

Add ability to test build.json is clean

Generate projects

Substantially rewriting INSTALL instructions.

This caps the size of the poll kick freelist at the arbitrary value of
25.

Cap the size of the poll kick freelist.

Conflicts:
	src/cpp/client/channel.cc
	src/cpp/stream/stream_context.cc
	src/cpp/stream/stream_context.h
	src/php/ext/grpc/call.c
	test/core/end2end/tests/max_concurrent_streams.c