Apply the same optimization to res.end(buf) that is applied to res.end(str).

Speeds up `node benchmark/http_simple_auto -k -c 1 -n 25000 buffer/1`
(non-chunked response body) by about 750x. That's not a typo.

Chunked responses:

  $ cat tmp/http-chunked-client.js
  // Run `node benchmark/http_simple` in another terminal.
  var http = require('http'), url = require('url');
  var options = url.parse('http://127.0.0.1:8000/buffer/1/1');
  options.agent = new http.Agent({ maxSockets: 1 });
  for (var i = 0; i < 25000; ++i) http.get(options);

Before:

  $ time out/Release/node tmp/http-chunked-client.js
  real    16m40.411s
  user    0m9.184s
  sys     0m0.604s

After:

  $ time out/Release/node tmp/http-chunked-client.js
  real    0m5.386s
  user    0m2.768s
  sys     0m0.728s

That's still a 185x speed-up.

Fixes #4415.

Use res.end() for the final chunk so we can benchmark the 'hot path' shortcut
in lib/http.js that packs the headers and the body into a single packet.

Man pages go into $PREFIX/man on OpenBSD, not $PREFIX/share/man.

Make parser errors bubble up to the ClientRequest instead of the underlying
net.Socket object.

This is a back-port of commit c78678b0 from the master branch.

Fixes #3776.

* npm: Upgrade to 1.1.69

* fs: fix WriteStream/ReadStream fd leaks (Ben Noordhuis)

* crypto: fix leak in GetPeerCertificate (Fedor Indutny)

* buffer: Don't double-negate numeric buffer arg (Trevor Norris)

* net: More accurate IP address validation and IPv6 dotted notation. (Joshua Erickson)

Close the file descriptor when a write operation fails.

Fixes #4387.

Close the file descriptor when a read operation fails.

Fixes #4387.

Verifies that the callback gets invoked <n> times during the lifetime of the
test script.

This is a back-port of commit d0e6c3f5 from the master branch.

Fixes #4384.

This is a back-port of upstream gyp commit r1482.

Man pages go into $PREFIX/man on FreeBSD, not $PREFIX/share/man.

Fix #4331

Using double negate forces values into 32bit space. Because of this
Math.ceil needs to be used. Since NaN comparisons are always false, use
that to our advantage to return 0 if it is.

Also added two tests to verify the changes.

* Added isIP method to make use of inet_pton to cares_wrap.cc
* Modified net.isIP() to make use of new C++ isIP method.
* Added new tests to test-net-isip.js.

This is a back-port of commit fb6377eb from the master branch.

* npm: Upgrade to 1.1.66 (isaacs)

* linux: use /proc/cpuinfo for CPU frequency (Ben Noordhuis)

* windows: map WSAESHUTDOWN to UV_EPIPE (Ben Noordhuis)

* windows: map ERROR_GEN_FAILURE to UV_EIO (Bert Belder)

* unix: do not set environ unless one is provided (Charlie McConnell)

* domains: don't crash if domain is set to null (Bert Belder)

* windows: fix the x64 debug build (Bert Belder)

* net, tls: fix connect() resource leak (Ben Noordhuis)

The 'secureConnect' event listener was attached with .on(), which blocked it
from getting garbage collected. Use .once() instead.

Fixes #4308.

The 'connect' event listener was attached with .on(), which blocked it from
getting garbage collected. Use .once() instead.

Fixes #4308.

This causes too many people to ask me why it's broken.

That Buffers can be used with Typed Array Views and DataViews. Included
are a couple simple examples.

Closes #4257.

Closes #4256

The documentation for http.request and https.request states that
`hostname` is preferred over `host` so the code examples should
use that option name.