Missing required changes from pull req. #1964

Revert "Open loop sync/async multithreaded testing"

Fix comments about return value of grpc_completion_queue_{next,pluck}

Open loop sync/async multithreaded testing

Removed redundant parameter from Reporter interface.

Fix compilation on mac

regularly.
Also, convert qps_test to test, from benchmark

Add tests for initial settings frames being bad

Add working tests for httpcli

Update README.md

Get internal documentation generated in the right place

Don't build codegen in grpc/java dockerfile

Also remove the parameterized constructor for InterarrivalTimer
and only keep the init function.

maintain affinity of next_channel whenever possible

Set up Node, Python, and Ruby environment in Jenkins slave.

Fix podspec of tests, sample and README

Set up Node, Python, and Ruby environment in Jenkins slave. Made other minor changes to make those work

Fix C# test access violation exception on Windows