Libuv now returns errors directly.  Make everything in src/ and lib/
follow suit.

The changes to lib/ are not strictly necessary but they remove the need
for the abominations that are process._errno and node::SetErrno().

Exports:

* all UV_E* error codes
* a uv_err_name() binding

Prep work for removing process._errno. The handle.getsockname() function
will return a status code in the future and set the address and port
properties on the object that's passed in from JS land.

Commit 636ca7c6 adds an optimization that casts strong Persistent<T>
handles directly to Local<T> handles to avoid the overhead of creating
new HandleScope-rooted Local<T> handles all the time.

One gotcha that I missed is that it's no longer legal to reference the
Local<T> after calling Persistent<T>::Dispose(). This commit addresses
that.

Helps catch bugs early on. Without it, V8 throws the fairly
unhelpful exception "TypeError: undefined is not a function" -
unhelpful because there is no stack trace.

It will be confusing if later on we add Buffer#dispose(), and smalloc is
its own cpp api anyways. So instead create a new require('smalloc') to
expose the previous Buffer.alloc/dispose methods, and expose copyOnto
and kMaxLength as well.

Other changes:
* Added documentation and additional tests.
* smalloc::CopyOnto has changed from using assert() to throwing errors
  on bad argument values because it is not exposed to the user.
* Minor style fixes.

For easier debugging it's helpful to always have the function name.
These were not set for methods coming from cc.

Conflicts:
	doc/api/stream.markdown
	lib/tls.js

When using url.parse(), path and pathname usually return '/' when there
is no path available. However when you have a protocol that contains
non-lowercase letters and the input string does not have a trailing
slash, both path and pathname will be undefined.

Provide more detailed explanation of the timing of `process.nextTick`
relative to I/O.

The Streams API doc is now broken up into 3 sections:

1. API for Consumers
2. API for Implementors
3. Details and Extras

This addresses one of the biggest points of confusion for new users who
start to consume streams, and get the impression that they have to do
lots of extra work and implement classes and such, just to get some data
out of a file.

In fa10b757 the assert to check if data == NULL was remove for
smalloc::Alloc with no callback. It should have also been removed where
a callback is accepted.

No sense in making sure that length == 0 if data == NULL because devs
already have to be responsible for checking that length is the same as
the char* they're passing in.

It hits a compiler bug in gcc <= 4.4 similar to the issue that was
recently addressed in commit 157d2bcc:

    ../deps/v8/include/v8.h: In function ‘char*
    node::Buffer::Data(v8::Persistent&) [with TypeName = v8::Object]’:
    ../src/node_crypto.cc:1123: instantiated from here
    ../deps/v8/include/v8.h:876: error: ‘class v8::Data’ is not a
    function,
    ../src/node_internals.h:356: error: conflict with ‘template char*
    node::Buffer::Data(v8::Persistent&)’
    ../src/node_internals.h:357: error: in call to ‘Data’

Remove the helper function, it was only used in a couple of places.
Should fix the build on Ubuntu 10.04.

Fixes #5844.

* npm: Upgrade to 1.3.4

* v8: Upgrade to v3.20.2

* c-ares: Upgrade to piscisaureus/cares@805d153

* timers: setImmediate process full queue each turn (Ben Noordhuis)

* http: Add agent.get/request methods (isaacs)

* http: Proper KeepAlive behavior (isaacs)

* configure: fix the --without-ssl option (Nathan Rajlich)

* buffer: propagate originating parent (Trevor Norris)

* tls_wrap: return Error not throw for missing cert (Timothy J Fontaine)

* src: enable native v8 typed arrays (Ben Noordhuis)

* stream: objectMode transform should allow falsey values (Jeff Barczewski)

* slab_allocator: remove SlabAllocator (Trevor Norris)

* crypto: fix memory leak in LoadPKCS12 (Fedor Indutny)

* tls: export TLSSocket (Fedor Indutny)

* zlib: allow changing of level and strategy (Brian White)

* zlib: allow custom flush type for flush() (Brian White)

Conflicts:
	AUTHORS
	ChangeLog
	deps/npm/Makefile
	deps/npm/doc/api/npm-commands.md
	deps/npm/doc/api/npm-deprecate.md
	deps/npm/doc/api/npm-init.md
	deps/npm/doc/api/npm-owner.md
	deps/npm/doc/api/npm-publish.md
	deps/npm/doc/api/npm-run-script.md
	deps/npm/doc/cli/npm-adduser.md
	deps/npm/doc/cli/npm-bin.md
	deps/npm/doc/cli/npm-bugs.md
	deps/npm/doc/cli/npm-build.md
	deps/npm/doc/cli/npm-cache.md
	deps/npm/doc/cli/npm-completion.md
	deps/npm/doc/cli/npm-deprecate.md
	deps/npm/doc/cli/npm-docs.md
	deps/npm/doc/cli/npm-edit.md
	deps/npm/doc/cli/npm-explore.md
	deps/npm/doc/cli/npm-help-search.md
	deps/npm/doc/cli/npm-help.md
	deps/npm/doc/cli/npm-init.md
	deps/npm/doc/cli/npm-install.md
	deps/npm/doc/cli/npm-link.md
	deps/npm/doc/cli/npm-ls.md
	deps/npm/doc/cli/npm-outdated.md
	deps/npm/doc/cli/npm-owner.md
	deps/npm/doc/cli/npm-pack.md
	deps/npm/doc/cli/npm-prefix.md
	deps/npm/doc/cli/npm-prune.md
	deps/npm/doc/cli/npm-publish.md
	deps/npm/doc/cli/npm-restart.md
	deps/npm/doc/cli/npm-rm.md
	deps/npm/doc/cli/npm-root.md
	deps/npm/doc/cli/npm-run-script.md
	deps/npm/doc/cli/npm-search.md
	deps/npm/doc/cli/npm-shrinkwrap.md
	deps/npm/doc/cli/npm-start.md
	deps/npm/doc/cli/npm-stop.md
	deps/npm/doc/cli/npm-submodule.md
	deps/npm/doc/cli/npm-tag.md
	deps/npm/doc/cli/npm-test.md
	deps/npm/doc/cli/npm-uninstall.md
	deps/npm/doc/cli/npm-unpublish.md
	deps/npm/doc/cli/npm-update.md
	deps/npm/doc/cli/npm-version.md
	deps/npm/doc/cli/npm-view.md
	deps/npm/doc/cli/npm-whoami.md
	deps/npm/doc/files/npm-folders.md
	deps/npm/doc/files/package.json.md
	deps/npm/doc/misc/npm-coding-style.md
	deps/npm/doc/misc/npm-config.md
	deps/npm/doc/misc/npm-developers.md
	deps/npm/doc/misc/npm-disputes.md
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	deps/npm/doc/misc/npm-scripts.md
	deps/npm/doc/misc/semver.md
	deps/npm/html/doc/README.html
	deps/npm/html/doc/api/npm-bin.html
	deps/npm/html/doc/api/npm-bugs.html
	deps/npm/html/doc/api/npm-commands.html
	deps/npm/html/doc/api/npm-config.html
	deps/npm/html/doc/api/npm-deprecate.html
	deps/npm/html/doc/api/npm-docs.html
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	deps/npm/html/doc/api/npm-init.html
	deps/npm/html/doc/api/npm-install.html
	deps/npm/html/doc/api/npm-link.html
	deps/npm/html/doc/api/npm-load.html
	deps/npm/html/doc/api/npm-ls.html
	deps/npm/html/doc/api/npm-outdated.html
	deps/npm/html/doc/api/npm-owner.html
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	deps/npm/html/doc/api/npm-rebuild.html
	deps/npm/html/doc/api/npm-restart.html
	deps/npm/html/doc/api/npm-root.html
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	deps/npm/html/doc/cli/npm-completion.html
	deps/npm/html/doc/cli/npm-config.html
	deps/npm/html/doc/cli/npm-dedupe.html
	deps/npm/html/doc/cli/npm-deprecate.html
	deps/npm/html/doc/cli/npm-docs.html
	deps/npm/html/doc/cli/npm-edit.html
	deps/npm/html/doc/cli/npm-explore.html
	deps/npm/html/doc/cli/npm-help-search.html
	deps/npm/html/doc/cli/npm-help.html
	deps/npm/html/doc/cli/npm-init.html
	deps/npm/html/doc/cli/npm-install.html
	deps/npm/html/doc/cli/npm-link.html
	deps/npm/html/doc/cli/npm-ls.html
	deps/npm/html/doc/cli/npm-outdated.html
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	deps/npm/html/doc/cli/npm-root.html
	deps/npm/html/doc/cli/npm-run-script.html
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	deps/npm/html/doc/cli/npm-shrinkwrap.html
	deps/npm/html/doc/cli/npm-star.html
	deps/npm/html/doc/cli/npm-stars.html
	deps/npm/html/doc/cli/npm-start.html
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	deps/npm/html/doc/cli/npm-submodule.html
	deps/npm/html/doc/cli/npm-tag.html
	deps/npm/html/doc/cli/npm-test.html
	deps/npm/html/doc/cli/npm-uninstall.html
	deps/npm/html/doc/cli/npm-unpublish.html
	deps/npm/html/doc/cli/npm-update.html
	deps/npm/html/doc/cli/npm-version.html
	deps/npm/html/doc/cli/npm-view.html
	deps/npm/html/doc/cli/npm-whoami.html
	deps/npm/html/doc/cli/npm.html
	deps/npm/html/doc/files/npm-folders.html
	deps/npm/html/doc/files/npm-global.html
	deps/npm/html/doc/files/npm-json.html
	deps/npm/html/doc/files/npmrc.html
	deps/npm/html/doc/files/package.json.html
	deps/npm/html/doc/index.html
	deps/npm/html/doc/misc/npm-coding-style.html
	deps/npm/html/doc/misc/npm-config.html
	deps/npm/html/doc/misc/npm-developers.html
	deps/npm/html/doc/misc/npm-disputes.html
	deps/npm/html/doc/misc/npm-faq.html
	deps/npm/html/doc/misc/npm-index.html
	deps/npm/html/doc/misc/npm-registry.html
	deps/npm/html/doc/misc/npm-scripts.html
	deps/npm/html/doc/misc/removing-npm.html
	deps/npm/html/doc/misc/semver.html
	deps/npm/man/man1/npm-README.1
	deps/npm/man/man1/npm-adduser.1
	deps/npm/man/man1/npm-bin.1
	deps/npm/man/man1/npm-bugs.1
	deps/npm/man/man1/npm-build.1
	deps/npm/man/man1/npm-bundle.1
	deps/npm/man/man1/npm-cache.1
	deps/npm/man/man1/npm-completion.1
	deps/npm/man/man1/npm-dedupe.1
	deps/npm/man/man1/npm-deprecate.1
	deps/npm/man/man1/npm-docs.1
	deps/npm/man/man1/npm-edit.1
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	deps/npm/man/man1/npm-init.1
	deps/npm/man/man1/npm-install.1
	deps/npm/man/man1/npm-link.1
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	deps/npm/man/man1/npm-run-script.1
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	deps/npm/man/man3/npm-explore.3
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	deps/npm/man/man3/npm-install.3
	deps/npm/man/man3/npm-link.3
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	deps/npm/man/man3/npm-rebuild.3
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	deps/npm/man/man3/npm-root.3
	deps/npm/man/man3/npm-run-script.3
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	deps/uv/AUTHORS
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	deps/uv/src/version.c
	deps/uv/test/test-fs.c
	deps/uv/test/test-list.h
	lib/http.js
	lib/tls.js
	src/node_version.h

Previously only one cb per turn of the event loop was processed at a
time, which is not exactly what is meant by immediate

fixes #5798

Be very careful with forward declarations, MSVC is quite picky and
rather stupid about it.

Fixes #5810.

Previously there was no way to pass a Function callback directly to
MakeCallback and support domains. The check has been added so that users
never have to worry about supporting domains while using MakeCallback.

X509_STORE_add_cert increment reference of passed `x509` cert,
`X509_free` must be called to avoid memory leak.

This is a back-port of commit c1db1ecd from the master branch.