It was decided that the performance benefits that isolates offer (faster spin-up
times for worker processes, faster inter-worker communication, possibly a lower
memory footprint) are not actual bottlenecks for most people and do not outweigh
the potential stability issues and intrusive changes to the code base that
first-class support for isolates requires.

Hence, this commit backs out all isolates-related changes.

Good bye, isolates. We hardly knew ye.

This reverts commit 7e0bf7d5.

It's possible to make GYP generate an XCode project that produces a .node file,
hence this commit is no longer needed.

* Update V8 to 3.8.9

* Support for sharing streams across Isolates (Igor Zinkovsky)

* #2636 - Fix case where http_parsers are freed too early (koichik)

* url: Support for IPv6 addresses in URLs (Łukasz Walukiewicz)

* child_process: Add disconnect() method to child processes (Andreas Madsen)

* fs: add O_EXCL support, exclusive open file (Ben Noordhuis)

* fs: more specific error messages (Tj Holowaychuk)

* tty: emit 'unknown' key event if key sequence not found (Dan VerWeire, Nathan Rajlich)

* build: compile release build too if BUILDTYPE=Debug (Ben Noordhuis)

* module: fix --debug-brk on symlinked scripts (Fedor Indutny)

* zlib: fix `Failed to set dictionary` issue (Fedor Indutny)

* waf: predict target arch for OS X (Fedor Indutny)

Conflicts:
	ChangeLog
	deps/uv/src/unix/udp.c
	deps/uv/src/win/fs.c
	deps/uv/src/win/udp.c
	deps/uv/test/test-fs.c
	doc/index.html
	doc/logos/index.html
	doc/template.html
	src/node_version.h

* check exit code of child processes
* wait 1000 ms to exit the child process
* prefix log messages with [PARENT] or [CHILD] to help debugging
* kill all child processes before exiting

Conflicts:

	test/simple/test-dgram-multicast-multi-process.js

When using isolate the .fork would break because it had
no .disconnect method. This remove the exit handler there
would call .disconnect since it was not required.
It also change .disconnect to throw if the channel is closed,
this was not possible before because .disconnect would be called
twice.

Somehow windows doesn't want to bind to 224.0.0.1. Let's test with a multicast
address that has no special meaning.

It sets __MAC_OS_X_VERSION_MIN_REQUIRED__, which is what we use for feature
detection.

Fixes #1138, #2610.

defines cannot be used if the callback is a templated and has
multiple template arguments. The comma separating the arguments
breaks the preprocessor argument handling. Using a templated function
is clearer and more idiomatic in c++.

This disconnect method allows the child to exit gracefully.
This also adds a disconnect event and connect property.

when the status code is 100 (Continue).

Fixes #2636.

If a timer callback throws and the user's uncaughtException handler ignores the
exception, other timers that expire on the current tick should still run.

If #2582 goes through, this hack should be removed.

Fixes #2631.

Formalize and cleanup handling of deprecated core methods.

Add key.code and key.sequence -mad props go out to @TooTallNate

* dgram: Bring back missing functionality for Unix (Dan VerWeire, Roman Shtylman, Ben Noordnuis)
  - Note: Windows UDP support not yet complete.

* http: Fix parser memory leak (koichik)

* zlib: Fix #2365 crashes on invalid input (Nicolas LaCasse)

* module: fix --debug-brk on symlinked scripts (Fedor Indutny)

* Documentation Restyling (Matthew Fitzsimmons)

* Update npm to 1.1.0-3 (isaacs)

* Windows: fix regression in stat() calls to C:\ (Bert Belder)

Thanks @mscdex for spotting this.