Update Rack::Utils::HTTP_STATUS_CODES hash

This adds the following status code lookups for the 102, 207,
226, 306, 422, 423, 424, 426, 506, 507, and 510 status codes.

Signed-off-by: Joshua Peek <josh@joshpeek.com>

lib/rack/utils.rb

@@ -318,23 +318,30 @@ def replace(other)
     end
 
     # Every standard HTTP code mapped to the appropriate message.
-    # Stolen from Mongrel.
+    # Generated with:
+    #   curl -s http://www.iana.org/assignments/http-status-codes | \
+    #     ruby -ane 'm = /^(\d{3}) +(\S[^\[(]+)/.match($_) and
+    #                puts "      #{m[1]}  => \x27#{m[2].strip}x27,"'
     HTTP_STATUS_CODES = {
       100  => 'Continue',
       101  => 'Switching Protocols',
+      102  => 'Processing',
       200  => 'OK',
       201  => 'Created',
       202  => 'Accepted',
       203  => 'Non-Authoritative Information',
       204  => 'No Content',
       205  => 'Reset Content',
       206  => 'Partial Content',
+      207  => 'Multi-Status',
+      226  => 'IM Used',
       300  => 'Multiple Choices',
       301  => 'Moved Permanently',
       302  => 'Found',
       303  => 'See Other',
       304  => 'Not Modified',
       305  => 'Use Proxy',
+      306  => 'Reserved',
       307  => 'Temporary Redirect',
       400  => 'Bad Request',
       401  => 'Unauthorized',
@@ -350,16 +357,23 @@ def replace(other)
       411  => 'Length Required',
       412  => 'Precondition Failed',
       413  => 'Request Entity Too Large',
-      414  => 'Request-URI Too Large',
+      414  => 'Request-URI Too Long',
       415  => 'Unsupported Media Type',
       416  => 'Requested Range Not Satisfiable',
       417  => 'Expectation Failed',
+      422  => 'Unprocessable Entity',
+      423  => 'Locked',
+      424  => 'Failed Dependency',
+      426  => 'Upgrade Required',
       500  => 'Internal Server Error',
       501  => 'Not Implemented',
       502  => 'Bad Gateway',
       503  => 'Service Unavailable',
       504  => 'Gateway Timeout',
-      505  => 'HTTP Version Not Supported'
+      505  => 'HTTP Version Not Supported',
+      506  => 'Variant Also Negotiates',
+      507  => 'Insufficient Storage',
+      510  => 'Not Extended',
     }
 
     # Responses with HTTP status codes that should not have an entity body