Fix some fuzzing bugs, expand corpora

Add compression support to lower Python/Cython layers

Tiny fix to check_include_guards script

Add an explicit base class pointer to avoid potential breakage.

Fixed compression interop and re-enable for C++.

grpc-accept-encoding checks

Updated functions with TSRM macros for ZTS support

Conflicts:
	tools/run_tests/tests.json

Fix leak in port deallocation

Perf script improvements