Make cpp codegen consistent with protoc in template format.

Properly mask signals in unit tests

Compile fix for mac

Node client constructor

Various win32 fixes.

Removing a few more traces of libevent.

Now all the gpr tests build and run under win32.

Tools to generate coverage reports

Don't mix C and C++ libraries.

Now buildtests_c won't try to build C++ libraries.

Add generated files to .gitignore

Removing libevent from third_party, as it's no longer necessary.

Run clang-format against node.js sources

Node codebase

Added libdl include to make the PHP library compile

Grpc tools docker pregenerate ssh key

clang-format codebase