Add a test addon that makes use of the zlib implementation bundled
with node, checking that a compression/decompression round-trip works.
This is largely based on the already-existing OpenSSL addon.
Fixes: https://github.com/nodejs/node/issues/7535
PR-URL: https://github.com/nodejs/node/pull/8039
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Anna Henningsen