merge revision(s) 39632: [Backport #8013]

	* lib/webrick/httpproxy.rb: Fix typos in HTTPProxyServer [Bug #8013]
	  Patch by Nobuhiro IMAI [ruby-core:53127]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39916 b2dd03c8-39d4-4d8f-98ff-823fe69b080e