buildgen: template renderer for our build system.

distpackages: script to generate debian packages.

distrib: scripts to distribute language-specific packages.

dockerfile: Docker files to test gRPC.

doxygen: gRPC C/C++ documentation generation via Doxygen.

gce: scripts to help setup testing infrastructure on GCE.

jenkins: support for running tests on Jenkins.

profile_analyzer: pretty printer for gRPC profiling data.

run_tests: scripts to run gRPC tests in parallel.