http: use official IANA Status Codes

* adds missing HTTP status codes
* corrects those with a wrong description
* the falsely included codes have been kept

PR-URL: https://github.com/nodejs/io.js/pull/1470
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/_http_server.js

@@ -27,9 +27,11 @@ const STATUS_CODES = exports.STATUS_CODES = {
   205 : 'Reset Content',
   206 : 'Partial Content',
   207 : 'Multi-Status',               // RFC 4918
+  208 : 'Already Reported',
+  226 : 'IM Used',
   300 : 'Multiple Choices',
   301 : 'Moved Permanently',
-  302 : 'Moved Temporarily',
+  302 : 'Found',
   303 : 'See Other',
   304 : 'Not Modified',
   305 : 'Use Proxy',
@@ -43,17 +45,18 @@ const STATUS_CODES = exports.STATUS_CODES = {
   405 : 'Method Not Allowed',
   406 : 'Not Acceptable',
   407 : 'Proxy Authentication Required',
-  408 : 'Request Time-out',
+  408 : 'Request Timeout',
   409 : 'Conflict',
   410 : 'Gone',
   411 : 'Length Required',
   412 : 'Precondition Failed',
-  413 : 'Request Entity Too Large',
-  414 : 'Request-URI Too Large',
+  413 : 'Payload Too Large',
+  414 : 'URI Too Long',
   415 : 'Unsupported Media Type',
-  416 : 'Requested Range Not Satisfiable',
+  416 : 'Range Not Satisfiable',
   417 : 'Expectation Failed',
   418 : 'I\'m a teapot',              // RFC 2324
+  421 : 'Misdirected Request',
   422 : 'Unprocessable Entity',       // RFC 4918
   423 : 'Locked',                     // RFC 4918
   424 : 'Failed Dependency',          // RFC 4918
@@ -66,10 +69,11 @@ const STATUS_CODES = exports.STATUS_CODES = {
   501 : 'Not Implemented',
   502 : 'Bad Gateway',
   503 : 'Service Unavailable',
-  504 : 'Gateway Time-out',
+  504 : 'Gateway Timeout',
   505 : 'HTTP Version Not Supported',
   506 : 'Variant Also Negotiates',    // RFC 2295
   507 : 'Insufficient Storage',       // RFC 4918
+  508 : 'Loop Detected',
   509 : 'Bandwidth Limit Exceeded',
   510 : 'Not Extended',               // RFC 2774
   511 : 'Network Authentication Required' // RFC 6585