zlib: move constants into zlib.constants

zlib constants were previously being added to binding in node_zlib.cc.
This moves the zlib constants to node_constants.cc for consistency with
the recent constants refactoring:
  https://github.com/nodejs/node/pull/6534

Adds require('zlib').constants to expose the constants
Docs-only deprecates the constants hung directly off require('zlib')
Removes a couple constants from the docs that apparently no longer
exist in the code

PR-URL: https://github.com/nodejs/node/pull/7203
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 2 insertions, 2 deletions

diff --git a/test/parallel/test-zlib-params.js b/test/parallel/test-zlib-params.js
index eea47979e3..09c35ca599 100644
--- a/test/parallel/test-zlib-params.js
+++ b/test/parallel/test-zlib-params.js
@@ -7,7 +7,7 @@ var fs = require('fs');
 
 const file = fs.readFileSync(path.resolve(common.fixturesDir, 'person.jpg'));
 const chunkSize = 12 * 1024;
-const opts = { level: 9, strategy: zlib.Z_DEFAULT_STRATEGY };
+const opts = { level: 9, strategy: zlib.constants.Z_DEFAULT_STRATEGY };
 const deflater = zlib.createDeflate(opts);
 
 const chunk1 = file.slice(0, chunkSize);
@@ -17,7 +17,7 @@ const expected = Buffer.concat([blkhdr, chunk2]);
 let actual;
 
 deflater.write(chunk1, function() {
-  deflater.params(0, zlib.Z_DEFAULT_STRATEGY, function() {
+  deflater.params(0, zlib.constants.Z_DEFAULT_STRATEGY, function() {
     while (deflater.read());
     deflater.end(chunk2, function() {
       var bufs = [], buf;