Fixes #3740

In the case of pipelined requests, you can have a situation where
the socket gets destroyed via one req/res object, but then trying
to destroy *another* req/res on the same socket will cause it to
call undefined.destroy(), since it was already removed from that
message.

Add a guard to OutgoingMessage.destroy and IncomingMessage.destroy
to prevent this error.

Clean up and DRY the cluster source code. Fix a few bugs while we're
here:

* Short-lived handles in long-lived worker processes were never
  reclaimed, resulting in resource leaks.

* Handles in the master process are now closed when the last worker
  that holds a reference to them quits. Previously, they were only
  closed at cluster shutdown.

* The cluster object no longer exposes functions/properties that are
  only valid in the 'other' process, e.g. cluster.fork() is no longer
  exported in worker processes.

So much goodness and still manages to reduce the line count from 590
to 320.

Class property that controls the maximum number of listeners for all
instances of EventEmitter.

Fixes #3014.

Conflicts:
	lib/events.js

An absolute path will always open the same location regardless of your
current working directory. For posix, this just means path.charAt(0) ===
'/', but on Windows it's a little more complicated.

Fixes joyent/node#5299.

* V8: upgrade to 3.18.0

* uv: Upgrade to v0.11.1

* http: split into multiple separate modules (Timothy J Fontaine)

* http: escape unsafe characters in request path (Ben Noordhuis)

* url: Escape all unwise characters (isaacs)

* build: depend on v8 postmortem-metadata if enabled (Paddy Byers)

* etw: update prototypes to match dtrace provider (Timothy J Fontaine)

* buffer: change output of Buffer.prototype.toJSON() (David Braun)

* dtrace: actually use the _handle.fd value (Timothy J Fontaine)

* dtrace: pass more arguments to probes (Dave Pacheco)

* build: allow building with dtrace on osx (Dave Pacheco)

* zlib: allow passing options to convenience methods (Kyle Robinson Young)

Allow the IPv4-mapped-as-IPv6 style address.

Switch to always use args.This() to retrieve object instance.

V8 was upgraded to 3.18 in commit 9f682265. The knobs that control the
ARM build have changed in a number of ways. This commit patches the
configure script to reflect that. Should fix the Raspberry Pi build.

Fixes #5329.

4716dc66 made assert.equal() and related functions work better by
generating a better toString() from the expected, actual, and operator
values passed to fail(). Unfortunately, this was accomplished by putting
the generated message into the error's `name` property. When you passed
in a custom error message, the error would put the custom error into
`name` *and* `message`, resulting in helpful string representations like
"AssertionError: Oh no: Oh no".

This commit resolves that issue by storing the generated message in the
`message` property while leaving the error's name alone and adding
a regression test so that this doesn't pop back up later.

Closes #5292.

Conflicts:
	src/node_os.cc

A new String was being created and returned, but was not sent through
the scope.Close(), which caused it to be cleaned up before being
returned.

This fixes generating the v8 contstants for dtrace on smartos

I broke dgram.Socket#bind(port, cb) almost a year ago in 332fea5a but
it wasn't until today that someone complained and none of the tests
caught it because they all either specify the address or omit the
callback.

Anyway, now it works again and does what you expect: it binds the
socket to the "any" address ("0.0.0.0" for IPv4 and "::" for IPv6.)

process.stdout isn't fully initialized yet by the time the test starts
when invoked with `python tools/test.py`. Use process.stdin instead and
force initialization with process.stdin.resume().

The current example shows the behavior of v0.8. In v0.10 arguments
to path.join() must be strings; otherwise, an exception is thrown.

Fix a NULL pointer dereference in src/handle_wrap.cc which is really a
use-after-close bug.

The test checks that unref() after close() works on process.stdout but
this bug affects everything that derives from HandleWrap. I discovered
it because child processes would sometimes quit for no reason (that is,
no reason until I turned on core dumps.)

When LD_LIBRARY_PATH is overriden for custom builds we need to preserve
it for child processes. To be sure we preserve whole environment of
parent process and just add TEST_INIT variable to it.

When LD_LIBRARY_PATH is overriden for custom builds we need to preserve
it for forked process. There are possibly other environment variables
that could cause test failures so we preserve whole environment of
parent process.

Windows doesn't have MAXHOSTNAMELEN. Introduced in afbaddec.

Fix a (rather academic) buffer overflow. MAXHOSTNAMELEN is 256 on most
platforms, which means the buffer wasn't big enough to hold the
trailing nul byte on a system with a maximum length hostname.

* Fix a buffer overflow that happens iff strlen(info.sysname) > 255.
* Check the return value of uname().

Make http.request() and friends escape unsafe characters in the request
path. That is, a request for '/foo bar' is now escaped as '/foo%20bar'.

Before this commit, the path was used as-is in the request status line,
creating an invalid HTTP request ("GET /foo bar HTTP/1.1").

Fixes #4381.