merge revision(s) 41215,41216,41217: [Backport #8627]

	* ext/socket/raddrinfo.c (nogvl_getaddrinfo): work around for Ubuntu
	  13.04's getaddrinfo issue with mdns4. [ruby-list:49420]

	* ext/socket/raddrinfo.c (nogvl_getaddrinfo): Add missing return
	  value assignment.

	* ext/socket/raddrinfo.c (nogvl_getaddrinfo): Fix indent.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@44933 b2dd03c8-39d4-4d8f-98ff-823fe69b080e