tools: bundle mk-ca-bundle.pl from upstream curl

This is a back-port of commit 5ab863d from the master branch.
tools: customize mk-ca-bundle.pl

Remove unneeded functionality and tweak the generated output so we
can #include it in C++ source code.

This is a back-port of commit e159073 from the master branch.
crypto: update root certificates

Update tools/certdata.txt to [0] (last updated on 2014-11-14) and
rebuild src/node_root_certs.h.

Refs joyent/node#8679 and joyent/node#8709.

[0] https://hg.mozilla.org/mozilla-central/raw-file/64206634959a/security/nss/lib/ckfw/builtins/certdata.txt
zlib: do not Unref() if wasn't Ref()ed

In very unlikely case, where `deflateInit2()` may return error (right
now happening only on exhausting all memory), the `ZCtx::Error()` will
be called and will try to `Unref()` the handle. But the problem is that
this handle was never `Ref()`ed, so it will trigger an assertion error
and crash the program.

Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
PR-URL: https://github.com/joyent/node/pull/8687
doc: fix grammar in tls and timers

Replace 'a' with 'an' where appropriate.
docs: fix streams example for write() after end()

Currently there's an example using http.ServerResponse stream, which
has a known bug and will not throw an error while writing after end().
Changed to a writable stream from fs which behaves as expected.

fix #8814

Signed-off-by: Julien Gilli <julien.gilli@joyent.com>
doc: clearer log messages in net code samples

Code examples in documentation for net.createServer and
net.createConnection contained confusing log messages. This change makes
them clearer.

Signed-off-by: Julien Gilli <julien.gilli@joyent.com>
deps: update libuv to 0.10.30

PR-URL: https://github.com/joyent/node/pull/8849
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
doc: fix typo secureOptions in tls

Documentation mentioned 'securityOptions', where it should have read
'secureOptions'.

Fixes #8608.

Signed-off-by: Julien Gilli <julien.gilli@joyent.com>
docs: clarify url.format documentation

The original documentation was slightly confusing. It seemed that the
list of items described the properties of the urlObj object, while it
was actually describing the formatting process. This change makes this
clearer.

Fixes #8796.

Reviewed-by: Chris Dickinson <christopher.s.dickinson@gmail.com>
build: configure return exit status from gyp

Previously, 'configure' would not return an exit status
if gyp blows up. This can be tested via:

    date >> node.gyp ; ./configure && echo A-OK

You will get "A-OK" even though gyp had failed.

Signed-off-by: Julien Gilli <julien.gilli@joyent.com>
src: remove icu_config

ICU support in v0.12 generates a new icu_config.gypi. This was
accidentally committed after switching branches. The file has been removed
and added to .gitignore.

Fixes: 0d051238 "timers: fix unref() memory leak"
timers: Avoid linear scan in _unrefActive.

Before this change, _unrefActive would keep the unrefList sorted when
adding a new timer.

Because _unrefActive is called extremely frequently, this linear scan
(O(n) at worse) would make _unrefActive show high in the list of
contributors when profiling CPU usage.

This commit changes _unrefActive so that it doesn't try to keep the
unrefList sorted. The insertion thus happens in constant time.

However, when a timer expires, unrefTimeout has to go through the whole
unrefList because it's not ordered anymore.

It is usually not large enough to have a significant impact on
performance because:
- Most of the time, the timers will be removed before unrefTimeout is
  called because their users (sockets mainly) cancel them when an I/O
  operation takes place.
- If they're not, it means that some I/O took a long time to happen, and
  the initiator of subsequents I/O operations that would add more timers
  has to wait for them to complete.

With this change, _unrefActive does not show as a significant
contributor in CPU profiling reports anymore.

Fixes #8160.
PR-URL: #8751

Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
deps: upgrade zlib to 1.2.8
deps: fix zlib.gyp for zlib upgrade to 1.2.8

This adds new sources for gzip files and defines a new flag for mac and freebsd.
They are taken from third_party/zlib/zlib.gyp in Chromium repository.
doc: Update LICENSE for zlib 1.2.8
deps: backport 2ad2237 from v8 upstream

Original commit message:

Fix Unhandled ReferenceError in debug-debugger.js

This fixes following exception in Sky on attempt to set a breakpoint
"Unhandled: Uncaught ReferenceError: break_point is not defined"
I think this happens in Sky but not in Chrome because Sky scripts are executed in strict mode.

BUG=None
LOG=N
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/741683002

Cr-Commit-Position: refs/heads/master@{#25415}
deps: backport b593aa8 from v8 upstream

Original commit message:

Enable "strict mode"; for debugger scripts

BUG=v8:3708

Review URL: https://codereview.chromium.org/736583007

Cr-Commit-Position: refs/heads/master@{#25420}
doc: improve dns module's documentation

Make the difference between dns.lookup and other functions even clearer.

PR: #8747
Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
test: remove redundant code in test

A block of asserts were duplicated in
test/simple/test-child-process-spawn-typeerror.js. This commit
removes the duplicated asserts.

Fixes: https://github.com/joyent/node/pull/8454
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>