doc: buffer: clarify typed array construction

It's possible to construct a typed array from a buffer but the buffer
is treated as an array, not a byte array as one might expect.

Fixes #7786.

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
buffer: improve {read,write}{U}Int* methods

Increase the performance and simplify the logic of Buffer#write{U}Int*
and Buffer#read{U}Int* methods by placing the byte manipulation code
directly inline.

Also improve the speed of buffer-write benchmarks by creating a new
call directly to each method by using Function() instead of calling by
buff[fn].

Signed-off-by: Trevor Norris <trev.norris@gmail.com>

Conflicts:
	lib/buffer.js
util.h: interface compatibility

Signed-off-by: Fedor Indutny <fedor@indutny.com>
zlib: do not crash on write after close

fix #7767

Signed-off-by: Fedor Indutny <fedor@indutny.com>
Revert "stream: start old-mode read in a next tick"

This reverts commit 2efe4ab7616669448f873b0417e9aa81221324e2.
Revert "src: fix _XOPEN_SOURCE redefinition warning"

This reverts commit 885142a5edc2c803fa8b9d92b5d0771379237764.

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
Revert "constants: export O_NONBLOCK"

This reverts commit 00890e43fb935c8bc5dc150f0f2c96bc465d8a4d.

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
constants: add O_NONBLOCK constant

It appears that it is defined unconditionally on all supported unixes.

fix #7867 #7855

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
doc: fix createCipher description

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
configure: fix v8 overriding commands on build

V8 seems to ignore the default value for want_separate_host_toolset and
would override it at build time. Instead always explicitly set the value.

Fixes #7833
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>
doc: fix console.assert docs, message is a format

Documentation for console.assert incorrectly described message as a
single message, but it is a format.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
doc: added X.json to the LOAD_AS_FILE sudo code

Signed-off-by: Fedor Indutny <fedor@indutny.com>
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>
doc: re-org child_process into async/sync

Cleaner separation between the traditional non-blocking functions and
the new blocking variants.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
lib: remove and restructure calls to isNaN()

Switch condition order to check for null before calling isNaN().
Also remove two unnecessary calls to isNaN() that are already
covered by calls to isFinite(). This commit targets v0.10, as
opposed to #7891, which targets master (suggested by
@bnoordhuis). Closes #7840.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
child_process: handle writeUtf8String error

When handling `writeUtf8String` error, return after emitting it.
Otherwise a runtime failure can occur.

fix #7923