Log Message:
Update ruby-httpclient to 2.2.7.

== Changes

= Changes in 2.2.7 =

  August 14, 2012 - version 2.2.7

    * Bug fixes

      * Fix arity incompatibility introduced in 2.2.6.  It broke Webmock.
	Thanks Andrew France for the report!

= Changes in 2.2.6 =

  August 14, 2012 - version 2.2.6

    * Bug fixes

      * Make get_content doesn't raise a BadResponseError for perfectly good
	responses like 304 Not Modified. Thanks to Florian Hars.

      * Add 'Content-Type: application/x-www-form-urlencoded' for the PUT
	request that has urlencoded entity-body.

    * Features

      * Add HTTPClient::IncludeClient by Jonathan Rochkind, a mix-in for easily
	adding a thread-safe lazily initialized class-level HTTPClient object
	to your class.

      * Proxy DigestAuth support. Thanks to Alexander Kotov and Florian Hars.

      * Accept an array of strings (and IO-likes) as a query value
	e.g. `{ x: 'a', y: [1,2,3] }` is encoded into \ 
`"x=a&y=1&y=2&y=3"`.
	Thanks to Akinori MUSHA.

      * Allow body for DELETE method.

      * Allow :follow_redirect => true for HEAD request.

      * Fill request parameters request_method, request_uri and request_query
	as part of response Message::Header.