Fix clang-format script

Maybe the channel is already ready when we call getstatus

Make load_tests protocol tests run via py.test.

Adding lcov to the jenkins docker files.

Node test coverage reporting

Updated end2end/README

Add scripts to build nuget package for zlib

Remove stdio usage from signal handler

Add more test cases to end2end test. 

Fix alarms

Fixes to bring code back into gcc4.4 compliance

Implement turnstile polling for Windows

Simplify running of cloud_to_cloud interop tests.

std::atomic

of ambiguous nullptr, eliminate use of brace initializer lists

Fix float to bool conversion compilation error in mac

Add some TODO comments for possible poll optimization

Pass through grpc_fd pointer rather than int.

ObjC - Adds class factory method to generated ProtoService classes