stream: only end reading on null, not undefined

The [Stream documentation for .push](http://nodejs.org/api/stream.html#stream_readable_push_chunk_encoding)
explicitly states multiple times that null is a special cased value
that indicates the end of a stream. It is confusing and undocumented
that undefined *also* ends the stream, even though in object mode
there is a distinct and important difference.

The docs for Object-Mode also explicitly mention null as the *only*
special cased value, making no mention of undefined.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
repl: fix multi-line input

The refactor in 3ae0b17c broke the multiline input's visual appearence.
While actually switching to this mode, the `...` prefix is not
displayed.

Additionally, account only SyntaxErrors that are happening at the parse
time, everything else should not be switching repl to the multiline
mode.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
events: Output the event that is leaking

Signed-off-by: Fedor Indutny <fedor@indutny.com>
configure: better detect windows 'bitness' (WOW64)

Signed-off-by: Fedor Indutny <fedor@indutny.com>
docs: highlight shell-codes in CONTRIBUTING.md

Signed-off-by: Fedor Indutny <fedor@indutny.com>
test: fix multiple_line problem in match

Signed-off-by: Fedor Indutny <fedor@indutny.com>
net: don't emit listening if handle is closed

Fixes #7834

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
child_process: accept uid/gid everywhere

Accept uid/gid option in every execute/spawn call (including
cluster.fork). Add documentation where needed.

fix #7881

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
tls: better error reporting at cert validation

fix #7417

Signed-off-by: Fedor Indutny <fedor@indutny.com>
deps: cherry-pick eca441b2 from OpenSSL

Original commit message:

    bn_exp.c: fix x86_64-specific crash with one-word modulus.

    PR: #3397

Signed-off-by: Fedor Indutny <fedor@indutny.com>
udp: make it possible to receive empty udp packets

A udp packet can have 0 content. In that case nread will be equal to 0,
but addr != NULL.

Add test case for empty data gram packets and fixed test that checked
for OOB when length == 0.

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
lint: fix indentation
net: reset `errorEmitted` on reconnect

Fix for `error` events emitting only once when reconnecting
a single instance of net.Socket.

Fixes joyent/node#7888

Signed-off-by: Fedor Indutny <fedor@indutny.com>
module: don't require fs several times

As we are going to need fs in any case, just require it at the
beginning of the file.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
readme: added g++ requirement

Signed-off-by: Fedor Indutny <fedor@indutny.com>
contextify: remove useless header file

fix #7910
streams: set default hwm properly for Duplex

Default highWaterMark is now set properly when using stream Duplex's
writableObjectMode and readableObjectMode options.

Added condition to the already existing split objectMode test to ensure
the highWaterMark is being set to the correct default value on both the
ReadableState and WritableState for readableObjectMode and
writableObjectMode.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
lib: noisy deprecation of child_process customFds

Use a util.deprecate wrapper to issue warnings like any other
deprecated API. The option has been marked as deprecated in the docs
since v0.5.11.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
doc: remove customFds mentions

The feature has been marked as deprecated since v0.5.11.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
test: Remove references to customFds

Option has been deprecated since v0.5.11

Signed-off-by: Fedor Indutny <fedor@indutny.com>