* test/dtrace/test_*.rb: use require_relative to require local library

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39940 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/socket/socket.c (sockaddr_len): return the shortest length for
  unknown socket address.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39941 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/minitest/test_*.rb: use require_relative to require local library

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39942 b2dd03c8-39d4-4d8f-98ff-823fe69b080e