* ext/socket/getaddrinfo.c (get_addr): reject too long hostname to
get rid of GHOST vulnerability on very old platforms.
* ext/socket/raddrinfo.c (make_hostent_internal): ditto, paranoic
check for the canonnical name.
check for the canonical name.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@49624 b2dd03c8-39d4-4d8f-98ff-823fe69b080e