Merge trunk revision: 39463

* lib/net/http.rb:  Removed duplicate Accept-Encoding in Net::HTTP#get.
  [ruby-trunk - Bug #7924]
* test/net/http/test_http.rb:  Test for the above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39464 b2dd03c8-39d4-4d8f-98ff-823fe69b080e