Changing a very long (4000s) deadline to 10s.

Fix leaked completions (leading to leaked calls in thread_stress_test)

Add tests for translating server handler errors to status objects

Subclass GRXWriter instead of conforming to its protocol

Docstring for grpc_create_pick_first_lb_policy

Tiny comment grammar fix

Added bitset macro ops

With GRXWriter a subclass of all writers, we can map the requestsWriter directly
without a dumb wrapper, and return GRXImmediateWriter objects where GRXWriter is
expected.

Introduced InteropContextInspector 

Add timeout interop test case

Rename Jenkins script to run_distribution

auth context iterator

Transport/call flow control interface

s/adds...with/adds...to

Fix authority in uri_parser

Make thread_pool.h a public header

Setting up ruby environment for macos.

php script minor fix

C# client-side metadata refactoring

Clarify the oauth2_auth_token scenario and add the per call credentia…