merge revision(s) 44585: [Backport #9268]

	* lib/net/smtp.rb: [DOC] Remove dead link to RAA by Giorgos Tsiftsis
	  Fixes the following bugs: [Bug #9152] [Bug #9268] [Bug #9394]

	* lib/open-uri.rb: ditto


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45111 b2dd03c8-39d4-4d8f-98ff-823fe69b080e