Ruby

• configure.in: fixed build failure of Haiku.
  [fix GH-984] Patch by @kallisti5
• ext/socket/getaddrinfo.c: ditto.
• ext/socket/getnameinfo.c: ditto.
• ext/socket/rubysocket.h: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52270 b2dd03c8-39d4-4d8f-98ff-823fe69b080e