Add xmldoc comments for function arguments in generated C# code

Remove leading space in C# service comments

Short deadlines: set Status on deadline

Fix typo

Revert "Add configurable exit grace periods and shutdown handlers"

Un-namespace Python packages

Uses dynamic loading to paper-over the negative effects of losing
namespace packages in the previous commit.

Revert "Reduce memory bloat (each server cq is very expensive)"

Reduce memory bloat (each server cq is very expensive)

Setuptools was updated and our hacky namespace-package-chickens came
back to roost. This removes the unsupported namespace package hacks.

Revert "Handle (and test) short call deadlines"

Revert "Revert "Revert "Remove redundant includes from string.h and tmpfile.h"""

Make cmake protobuf building consistent with third_party/protobuf

Get rid of unused ReleaseSigned config

Fix the incorrect number of states

There're five states: CONNECTING, READY, TRANSIENT_FAILURE, IDLE, SHUTDOWN.

Rewrite pollset_set implementation

Handle (and test) short call deadlines

Add ServiceRpcHandler to exported names

Use user provided method name when using binary files in cli

Address comments from #8913.  Also make changes needed for import.

Revert "Revert "Remove redundant includes from string.h and tmpfile.h""

Provide a way to exit handshaking early without an error.

Allow handlers to hint at the services they export

Return status unavailable (over internal) on EPIPE

Readable output from run_tests.py on windows