2015-09-17, Version 4.1.0 (Stable) Release

Notable changes:

* buffer:
  - Buffers are now created in JavaScript, rather than C++. This increases the speed of buffer creation (Trevor Norris) https://github.com/nodejs/node/pull/2866.
  - `Buffer#slice()` now uses `Uint8Array#subarray()` internally, increasing `slice()` performance (Karl Skomski) https://github.com/nodejs/node/pull/2777.
* fs:
  - `fs.utimes()` now properly converts numeric strings, `NaN`, and `Infinity` (Yazhong Liu) https://github.com/nodejs/node/pull/2387.
  - `fs.WriteStream` now implements `_writev`, allowing for super-fast bulk writes (Ron Korving) https://github.com/nodejs/node/pull/2167.
* http: Fixed an issue with certain `write()` sizes causing errors when using `http.request()` (Fedor Indutny) https://github.com/nodejs/node/pull/2824.
* npm: Upgrade to version 2.14.3, see https://github.com/npm/npm/releases/tag/v2.14.3 for more details (Kat Marchán) https://github.com/nodejs/node/pull/2822.
* src: V8 cpu profiling no longer erroneously shows idle time (Oleksandr Chekhovskyi) https://github.com/nodejs/node/pull/2324.
* v8: Lateral upgrade to 4.5.103.33 from 4.5.103.30, contains minor fixes (Ali Ijaz Sheikh) https://github.com/nodejs/node/pull/2870.
  - This fixes a previously known bug where some computed object shorthand properties did not work correctly (https://github.com/nodejs/node/issues/2507).

Refs: https://github.com/nodejs/node/issues/2844
PR-URL: https://github.com/nodejs/node/pull/2889