merge revision(s) 44642: [Backport #9093]

	* lib/resolv.rb (Resolv::DNS::Resource::TXT#data): Return concatenated
	  string.
	  Patch by Ryan Brunner.  [ruby-core:58220] [Bug #9093]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45114 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44463: [Backport #9210]

	* variable.c: adding extra example in docs.
	  patched by Steve Klabnik. [Bug #9210]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45115 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44878,44879: [Backport #9483]

	* ext/ripper/lib/ripper/lexer.rb: [DOC] use lower case version of core
	  classes when referring to return value, since we aren't directly
	  talking about the class. Patch by Jonathan Jackson [Bug #9483]

	* lib/open-uri.rb: [DOC] use lower case version of core classes, same
	  as commit r44878, based on patch by Jonathan Jackson [Bug #9483]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45116 b2dd03c8-39d4-4d8f-98ff-823fe69b080e